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BMW 330i 325i E46 Fuel Pressure Regulator Replacement (M54 engine)

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See how to replace the combination fuel filter/fuel pressure regulator on an E46 BMW with an M54 engine. This would be the 325i or 330i models with the 2.5L and 3.0L engines that used a returnless type fuel system. The older 323/328i models had the M52TU engine and those used a return type fuel system. I will cover those models in a future video.
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Text Comments (202)
lol lol (8 hours ago)
Makes me nervous the way you put the car on jack stands with No more Safety on it. Dont trust them jack stand . Trow something under there that would hold the car incase of malfunction. Be careful man. I need you alive to fix my car . God bless.
J. S. (2 days ago)
Hey 50s kid, I love your videos man keep at it! I do have a ? for you, I have been working on my 2000 323i BMW e46 wagon with the bleed down fuel pressure long cranking issues. Ive replaced fuel pump twice, fuel pressure regulator with valve and replaced all injectors and when I turn key on fuel pressure goes to 50 and it leaks down to zero in a matter of seconds. Car running good tho. Any ideas? Suggestions? I am going crazy trying to figure it out. Thanks in advance man. Hope you can respond.
Kenny Springer (8 days ago)
If I accidentally hope the feed lines into the wrong spot meaning fuel into pressure regulator and pressure regulator into fuel the feed would it cause a problem with the regulator
ZayMan Everyday (21 days ago)
Hello, I am trying to figure out the location of the fuel injector relay switch on an 03 325i...I've watched several videos and still can't confirm the location. Car cranks but will not turn over. Reset the computer and it started and ran for a couple hours then back to just cranking and no turn over...was advised to replace the fuel injector relay. Any thought/advice would be appreciated as I have no clue what I'm doing lol
v r (28 days ago)
hey question changed my fuel pump and fuel filter front two o2 sensors on my 2002 325i still getting a po152 po174 p1085 ive done the checks for vacuum leaks changed boots f connector and all lines i can see not sure what else it could be any help would be greatly appreciated still getting misfires 5/6 cant get it to pass inspection car is starting to be a pain i have the rear o2 sensor to put in next car is running at 27%stft on bank two only would the rear o2 sensor cause it to lean out
Aiden Paparoa (2 months ago)
Thanks for the videos changed mine today :). Just a littel side tip if you want no fuel to come out of the lines you can run your car to a quarter tank "maybe even half" jack the car from the front as high as you can so the fuel stays at the back of your car. leave your car like this for a couple hours "i left mine for 24hrs" There should only be abit of fuel left in the fuel filter that you will need to worry about.
manny fuentes (2 months ago)
Hi....I just got my E46 about 2 weeks ago and I love it...it's a 325xi. 2005.....well I got 3 pending codes p0172,p0175 and a p1448...any advice on that?...fuel pump and filter replaced...new MAF ,plugs but not sure about o2 sensors....or ecm....any advice will be greatly appreciated....keep up with the videos they're great
jacqds88 (2 months ago)
Hello. I have 2001 bmw. 325 I. I like to. Know. What. Program. You. Use. In your. Computer. Thank
Beyond Repair (3 months ago)
To minimize the fuel spilling out I shoved a golf tee in each line as soon as it was removed from the filter. Worked great but a small amount of fuel coming out is a given however I didn't need a pan to collect the few drops.
Eugene Stoner (3 months ago)
Does anyone know the vacuum hose size/specs he mentions you should change out at the beginning? Looks like an end cap piece and the main vacuum hose. Inner outer Diameter of each??? Thanks!
Strmi Nation (4 months ago)
E46 320D 110kw also has something like this?
1joseda (4 months ago)
Hi I have a Bmw 325xi 2003, I just replace all fuel injectors and spark plugs, keep giving to me a miss fire code on 6 and 4, turn on fine and when I try to drive just engine shut down.. please help me..
John Haessler (5 months ago)
I have p1353 n p0313 codes. Hoping bad filter, replce , run chevron 4 a tank. Hope this helps. If not maybe fuel pump???
Azean (5 months ago)
Great video, learning a lot from you about maintenance on my new e46. Do you know what size hoses are used in the fittings and the pressure regulator (I have a feeling I will need to update those too when I change the filter...) Cheers
Diondrey Keelin (6 months ago)
Nice video keep up the good work man I have a 330i 2001 and this will help me out alot God bless.
Vee Lone (6 months ago)
+50sKid or anyone else... I'd like to know the size of the hose that attaches to the pressure regulator vacuum hose. Please refer to https://www.youtube.com/watch?v=8t-6raUI8vs hopefully You'll see my comment. If not, please skip to 10:58 to 11:10 on that video with the provided link above. Thank You.
Rauda Wilmar (7 months ago)
Eres mi amo
Da Maestro (7 months ago)
Anyone knows the sizes of those hoses ? Or part number?
Aiden Paparoa (2 months ago)
Da Maestro buy the filter and take it to any car shop get them to fit the hose's on you will need a silicone hose for the pressure wich is the smallest and fuel hose for the rest you will also need 6 clamps that can fit the 3 fuel hose's try get them in stainless steel so they dont rust
sjgrundy (7 months ago)
Thanks for this video! The F-connector is located in the air intake pipe, before the throttle butterfly, so there is no vacuum here. Where does the thin vacuum line get it's vacuum from, in order to operate the fuel pressure regulator?
50sKid (7 months ago)
Yeah I honestly have never given that sucking jet pump any real thought. I've read somewhere that it boosts the vacuum in the brake booster somehow.
50sKid (7 months ago)
It's not a vacuum controlled fuel pressure regulator, it's fixed. That line is there just in case the diaphragm bursts--it routes the fumes into the intake.
sjgrundy (7 months ago)
Also, the larger diameter pipe of the F-connector goes to the sucking jet pump "branch" which DOES see manifold vacuum. This would effectively bypass the throttle butterfly?! What have i misunderstood here?
HLamTran7 (7 months ago)
would a fuel filter cause my car not to start?
50sKid (7 months ago)
if it was seriously clogged, yes
kevin schinkel (7 months ago)
hi 50's kid! I love you video's and they have helped me a lot during my maintenance to my 320CI BMW 2003 anyhow i was wonder how many miles your car has done before you replaced the filter? i just did mine after 100.000 miles and i havent seen any of the black stuf coming out of my filter... greetings from the Netherlands!
Mihai Pop (7 months ago)
i was going to this today on my 330ci and the hoses that go on the filter are rotten af so i need to replace them, anyone knows what size it is and also i want to change the clamps as well, i can't seem to find any info on sizes
50sKid (7 months ago)
just eyeball the clamps--they're likely the small ones you'll be able to find. The hose is 3.5mm ID. https://amzn.to/2I5ZECf
David Nguyen (8 months ago)
Landing path - taking off path, lucky you!
mustangj0hn (9 months ago)
Just a note that if you own a Right hand drive E46, then the drivers and passenger sides are reversed!
The Project D JF (9 months ago)
Perfect Video.
79Pavlito (9 months ago)
Can someone help please here ?
79Pavlito (9 months ago)
I need to replace vacuum hose from F point to filter smaller one on bottom. What size of hose is that and what length I need to go all the way to fuel filter ?
79Pavlito (9 months ago)
Thanks 50skid
50sKid (9 months ago)
just the rubber ends. You need 3.5mm ID vacuum hose. You can find good quality silicone ones on amazon.
79Pavlito (9 months ago)
And do I need replace all line or just rubber ends ?
79Pavlito (9 months ago)
To clarify I need replace vacuum line to fuel pressure regulator, and it’s that a difficult job ?
joe santo (10 months ago)
same shit came out of mine just did mine thanks for showing me bro did it the street on one axle stand curb side autos
Paul Gunn (10 months ago)
Love your videos! This morning my 2005 325xi was running in the driveway and then it quit. Never happened before. Now it won't start. Motor turns over but doesn't start. Any suggestions?
Paul Gunn (9 months ago)
If was a dead fuel pump. Thanks.
Paul Gunn (10 months ago)
Schrader valve OK, replaced relay, fuse ok. Still turns over but won't start? Any thoughts before I have it towed away for yet another expensive shop bill? Thanks!
Paul Gunn (10 months ago)
Hi, when I pressed the valve gas spewed out. I replaced the relay and the fuse is good. Any ideas on why it turns over but won't start?
50sKid (10 months ago)
Paul Gunn dead fuel pump maybe. Try pressing the schrader valve in on the fuel rail with a screwdriver and seeing if there is pressure. If not, it’s dead
AZ1LLA Capuchino (10 months ago)
I have an 03 325xi is it the same process to change the fuel filter? and do I need to buy the regular fuel filter or the filter with the pressure regulator?
50sKid (10 months ago)
+adam c yes and you need the combined filter and regulator
Mrdude 35 (11 months ago)
Does anyone know where the fuel pump location is for a 2005 Bmw 325ci convertible? Any help would be appreciated. Thanks guys
50sKid (10 months ago)
Same place as all E46s--pull up the back seat. It's on the right side.
blackpassenger (11 months ago)
doing mine toda
blackpassenger (1 year ago)
hey, do i need to change the fuel regulator too when i replace the filter? thanks in advance
blackpassenger (1 year ago)
oh man, excellent. i never ever ever have to go to the dealer here in japan again. whenever i go to the dealer here for a part number, theyre always trying to get me to order the part from them. And yo, the prices here? anywhere from 2 - 7x more expensive. for example: spark plugs here are 22 bucks each and four rotors with all the pads are 600 bucks.
blackpassenger (1 year ago)
oh excellent. good lookin' out.
50sKid (1 year ago)
blackpassenger nah you can tell by your vin too. Go to realoem.com and put in the last 7 of your vin and then find the part no for the filter
blackpassenger (1 year ago)
many thanks. hopefully its the former. i guess the only way to find out is to get under there? or can the stealer tell by the VIN?
50sKid (1 year ago)
If you have the old system where the two are separate, no you don't need to change the regulator. If you have the newer system where they're both integrated, well, you have no choice lol
Rita McCormick (1 year ago)
Might want to consider not using your power driver when gas is present. Brushes make sparks make fire.
Moritz Schmid (1 year ago)
Hi @50skid. Thanks for your great vids! Say, Could I buy a Kayser fuel filter without pressure regulator and reuse the regulator from my old filter (put it on the new filter when replacing?)? Found the naked Kayser fuel filter for 16 $ @ OEMbimmer. My ride is a 2001 300xi. Cheers
50sKid (1 year ago)
Yep that's what it says there.
Moritz Schmid (1 year ago)
And that's the part: 01 Fuel filter with pressure regulator D=55MM/L=315MM 1 13327512019 $96.84   .....//// Means I need to buy the one with pressure regulator on it, right? Cheers!
Moritz Schmid (1 year ago)
Thanks man. RealOEM tells me I have the normal M54 engine. Cheers
50sKid (1 year ago)
If you have an M52TU engine you are supposed to have the bare fuel filter like that. The pressure regulator is separate. Watch this video on a car that has this type of system and you will see what it looks like: https://www.youtube.com/watch?v=jqef_Xpz7Og-- Consult realoem.com and enter in the last 7 digits of your VIN number to find the exact part number for your car and then type that part number into google or ebay and you will see what the part looks like and then you'll know what system you have.
HJ D (1 year ago)
Hi, your videos are a great help for the M54 owners(including me). I have a situation now, and I'm really curious about your opinion about it. Let's start with the start. More than a year ago I discovered that I couldn't empty my fuel tank more than 1/8th of the meter. When the warning light came on, my car died(with a left range of 80-90km). It happened 2 times before I knew I had to fuel earlier, and the problem was 'solved'. Half a year ago, the engine check light came sometimes on. It was not always there, but just sometimes. It was throwing the codes P0174 and p0171. At first, i was looking for a vacuum leak somewhere. I changed the DISA gasket, the valve cover gasket(including new vanos), and the two Rubber boots at the intake. It was still coming back. I changed my MAF sensor, but this also not helps, and the last days its getting worse. After i fuelled the car completely up, it was really worse. At cold starts, its dieing directly 2 or 3 times. After that its shuddering and on 5-cilinders. It throws codes P1085, P1083, P0174 and 0171. Also sometimes the car is giving a whistling noise, coming from behind, that differs on the revs. After long thinking I will change my fuel pump and filter(regulator). I guess thats the only logically left thing, except of a closed/contaminated catalysator. What do you think?
HJ D (1 year ago)
The problem is solved! It was the fuel pump, it was failing. Not completely failing, but failing in capacity. More than half a year my car was running too lean due to this pump. In the first 5m i felt the difference. Feels like a diesel now, much more torque in the low RPM's. Still thanks for your answer.
50sKid (1 year ago)
Check out my common vacuum leaks video. 171/174 is almost always one of those.
mateo dominguez (1 year ago)
what code did you have if any? or what were the symptoms of bad fuel filter, I have a p0174 on mine, 2001 bmw 325i
Guillermo Cendejas (1 year ago)
What kind of power tool is that what brand?
50sKid (1 year ago)
That is an older Makita 1/4 impact driver however, I would recommend you go for the Milwaukee 2754-22 3/8 cordless impact wrench (200 ft lbs!).
jeff Brown (1 year ago)
bad vacuum line to the fuel filter caused a 174 code on my 2004 bmw 325i. service engine light was on a year. drove me crazy. fuel pump went out and while replacing it and the fuel pump he found the bad vacuum line at the filter. code free no light now.
great gardengnome (10 months ago)
Awesome, I am getting a P0174 on my 2003 325iAT. I practively purchased solid silcone hose to run from the filter all the way up to the intake. Doing the filter today, hopefully this is the source of my vacuum leak
ERIK DOM (1 year ago)
i have that code p0174 bank 2, thanks, im going to check mine from there
50sKid (1 year ago)
Nice
Jose Aguilar (1 year ago)
Hello Sir! Great Videos. Thank You! I wish you lived in Dallas so that you could help me out :)
MartyHaloMeyer (1 year ago)
Thanks again for your videos. Sincerely, DEADF15H on E46Fanatics.com
50sKid (1 year ago)
thank you!
Missie Thiele (1 year ago)
Hey! First off I love your videos! they have been so helpful! I have a 2000 BMW 323i and I have been looking around for fuel filters with regulators and I am seeing two different kinds. Ones with regulators in them and ones without.  I am wondering if the one you used would work for my vehicle.
nate (1 year ago)
+50sKid Great videos,I have a ? My car lost power 3 times in one day.I have lean codes p0174p0171 and now my car want start and if it does which is rare it stalls immediatelyIt throw codes at 69mphNo pressure at the fuel valve.im getting ready to install a fuel pump.But before I do could it be the fuel filter/regulater.I hear the pump prime when I turn the key
50sKid (1 year ago)
It certainly could be the fuel filter--I would replace that first.
Green Beast79 (1 year ago)
I have a 325xi and for some reason SOMETIMES it sounds like a 4x4 like you can really hear the fan spin when I hit the throttle. Sometimes it does and sometimes it doesn't. And the other thing my fuel trims are around 10 to 14 positive and when I hit the gas it stays about the same. The long term is like -4. Do you have any ideas
Green Beast79 (1 year ago)
50sKid today at cold start the fuel trims were at -4 then at warm up it was at +14 then after maybe 20min it goes down to +3to+4 but still gets the p0171 and p0174 codes
50sKid (1 year ago)
That is quite strange. Fuel trims usually don't stay the same at 3000 rpm as they are at idle.
Troy Turbett (1 year ago)
@50skid the head of the worm gear clamps are 5.5mm.
Ralf Rodriguez (1 year ago)
my car turns off when im driving and its leaking from that same spot ....330i 06 thats y it turns off?
Julio Oliver (1 year ago)
This video is 2 years old but just in case the viewers want to know I believe those clamps are removed with a 1/4 socket. Not a 1/4 ratchet, but a 1/4 socket. :)
Lu C (1 year ago)
Hey, i replaced my fuel filter and went for a test drive, ive been driving with the temp on display on the dash because of some overheating issues i had a couple months back, which i fixed by replacing the thermostat and water pump, but now when im idling for a couple minutes the car starts overheating and goes back to normal temp once i start driving again, please help me!!!
50sKid (1 year ago)
Those two things are unrelated. Either your thermostat is sticking closed or your temp sensor is acting up
Slengo Slengaw (1 year ago)
can someone please answer my question. can a dirty fuel filter cause erratic RPM on cold start which disappears when the engine runs for a few minutes?
Slengo Slengaw (1 year ago)
Ben Horsley I have BMW N47 engine which the CCV is part of the rocker cover and I recntly (about a year ago) changed it Anyhow how can I diagnose it?
Slengo Slengaw (1 year ago)
Ben Horsley it jumps up and down between 800 and 900 rpm and you feel the car shaking. It settles after the engine warms up. And it smokes (white/blue) while it jumps up and down
elmer sinay (1 year ago)
thanks for the video really helpful. 👌👌👌👌
Cameron Miller (1 year ago)
i know its been a while since uploading but what size hose did you buy for the vacuum line? thanks
frank j (1 year ago)
Hi, my 330ci has some sort of internal leak in the fuel system that causes fuel pressure to drop over time. I'm not exactly sure what is causing this but it seems to hold pressure for longer when the car has run for quite a while vs she drops fuel pressure quicker when she has only run a few miles (under the same ECT temp). Could it be a faulty pressure regulator that holds pressure for longer when it gets heated up from the heat of the exhaust ?
frank j (1 year ago)
Will try that. Thank you
50sKid (1 year ago)
+frank j it's the check valve inside of the fuel pump. It goes bad over time. You can install an aftermarket inline check valve immediately after the pump for about $7 that will solve the problem. Search for fuel check valve on Amazon and buy a 10mm one.
Natalie Jane (1 year ago)
just quick question im just confused im thinking if i cut those hose gas will continue to pour out? il be stuck and takes time to get off my rusted clamps.thank you very much
Natalie Jane (1 year ago)
pls correct me coz this wil be my first attempt to change my fuel filter excuse my ignorance actualy im confused but want to try it my self whats bothers me is that if i cut thise hose to loosen the clamp what i think is gas will pour our continuosly???it will get me some time to get off/cut off those veryyyy rusteddd clamp very tight.
50sKid (1 year ago)
Yes one of them will leak out quite a bit of gas--do yourself a favor and buy some fuel line clamps from Harbor Freight: https://www.harborfreight.com/4-piece-fluid-line-clamp-set-65116.html
MrCuckoobox (1 year ago)
Thanks for Sharing.........Just FYI....When replacing hose clamps -fuel, vacuum, coolant etc. I try to use the "Pressed" OEM Style "Worm" Clamps such as Oetiker (OEM) or Norma/Gemi (They have pressed threads) The clamps that you installed have the "cut holes" for the threads. A BMW Mechanic explained that those type clamps(with the holes for threads) damage the hoses because they cut into the hose. As the hose ages it is more likely to fail sooner. I presume that is why BMW uses them. They can be found if you look for them. I know that AutohausAZ carries them.
50sKid (1 year ago)
Interesting, thanks!
ShootingForDummies (1 year ago)
hey 50s kid! whats the hose clamp size. Im doing mine this upcoming week
Natalie Jane (1 year ago)
what to do if the clamp are too rusty? will it safe to cut the hose to free it from the clamp? pls advice thank you
50sKid (1 year ago)
Sure but you will want to replace the hose at that point because it won't be long enough to reconnect to the replacement filter. Make sure you get fuel hose for fuel injection systems--so that it will handle the pressure.
175 Driver (1 year ago)
What airport?
Dave Ram (1 year ago)
but on a serious note. You could use some Xtra clamps or a vice grip set to clamp the hoses near the fuel filter ,That would keep the gasoline from pouring out
Ays Prince (1 year ago)
hey , im a fan of your work. i had a problem with my bmw 320ci 2005 in bank1 and bank 2, i changed all lean codes. so , do i need to change my fuel pump to , cuz it feels like my car lose it power .. she goes slower up to 100km/h . and why do we need to change the fuel pump what does it do? help me out i need this. EU miles 15000 .
50sKid (1 year ago)
Watch my fuel trims video.
Ays Prince (1 year ago)
i had code p0171 p0174, and after some changing one of them is gone but i still had a bank2 code left in my scan. so i guess its cilender 4-5-6 `? what can it be ?
Ays Prince (1 year ago)
i had code p0171 p0174, and after some changing one of them is gone but i still had a bank2 code left in my scan. so i guess its cilender 4-5-6 `? what can it be ?
50sKid (1 year ago)
What codes do you have exactly? Did you erase them and did they come back again?
Pablo Carpio (1 year ago)
Hi I have a question, I have a 2010 328i xdrive sulev and I was told that the Fuel Pressure Regulator is faulty, they already replaced the Fuel Pump, now they want to charge me 3k to change the Fuel Pump Assembly which includes Fuel Tank and kits, should I go to a Independent mechanic and change only the Fuel Pressure regulator? Thanks
Pablo Carpio (1 year ago)
A648645 Thanks
50sKid (1 year ago)
What are the last 7 digits of your VIN number so I can look up diagrams?
Natalie Jane (1 year ago)
Hi im doing a fuel filter replacement right now but clamps are too very rusty even torx or phillips screw driver wont hold.Do you know i have to do?im thinking to cut the hose but i dont know if its a good idea and even i cut it i dont know where to buy exact size and kind.thank you very much
Dave Ram (1 year ago)
Natalie Jane use a torch 😂😂😂
Natalie Jane (1 year ago)
I bought a mini plier cutter to cut the clamp.thank you very much for the response. _https://lh3.googleusercontent.com/3URq0KolE-IoFB66SAA08UjNBZ88plM7W1XPwhFeWlrqNZiski8ZCgF0ijaYfmIj8_G8poVa_
50sKid (1 year ago)
Try a needle nose visegrip. You can get fuel hose at your local auto part store (in the back, by the foot)
extonjaez (1 year ago)
After the change of the oil filter, i have prime the engine 3 times and wait 5s (X3). When i tried to start up. Then motor make a startup noise but i that's all, not the final startup. Have you an idea ? best Regards!
extonjaez (1 year ago)
After changing the fuel filter
50sKid (1 year ago)
After changing the oil filter or the fuel filter?
Todd Williams (1 year ago)
I changed the ccv kit on a 2005 bmw 325I. It developed a fuel leak where the fuel inlet hose connects to the fuel rail. It has a small crack. I know that area has a quick connect. Will it be the same on the other end?
50sKid (1 year ago)
Yes, same on the other end which you can get from below
Mark O (1 year ago)
What size is the vacuum line that needs to be replaced -- that small short black tube that attaches to the side of the fuel filter?
PS4 Custom Gamer (1 year ago)
Is that the rubber part or the plastic tube? it seems odd being an imperial size as oppose to metric.
50sKid (1 year ago)
3/32"
Mark Poposki (1 year ago)
Hello, please help me! You seem to know this cars inside out. I have a pretty good knowledge about BMW. Have torn them apart and put the together. I have an issue with WARM LONG crank. I have replaced: fuel pump; relay; filter; performed smoke test, CCV-pipes; probmem persists. I also have lean codes for bank 1 and 2 that I'm not able to solve. Again I have no vacuum leaks. I've emptied 2 cans on carb choke spray on the intake on top of the smoke test to ensure no vacum leaks. Pls help. If you want pls weite markpoposki at gmail
50sKid (1 year ago)
What you are describing is a vacuum leak, not a fuel delivery problem. As I say in the video, if your fuel trims drop when you rev the engine, that is a vacuum leak. Find it, fix it, your problems will go away.
Mark Poposki (1 year ago)
50sKid so I changed the fuel pump relay. No change with the WARM long crank. I got a lean code after first start on bank 2. Fuel trims positive around +10 for bank 1 and negative for bank 2. If I rev the bank 1 FT go towards 0 and the bank 2 go further negative 😭. After the troublesome start the car works fine. No hesitations no shaking no lack of power. I also do not hear the fuel pump priming when I put the key in 2nd position. I also changed the 20amp pile pump fuse. No change!
Mark Poposki (1 year ago)
50sKid well do this and report back.
Mark Poposki (1 year ago)
50sKid ohhhhh now I see that I've changed the injectors relay...
50sKid (1 year ago)
The fuel pump relay is not under the hood. It's above the fuse panel in the glove box like I said before. http://cdn4.pelicanparts.com/BMW/techarticles/BMW-3-Series-E46/108-FUEL-Fuel_Pump_Testing/images_large/pic18.jpg
Edgar Baez (2 years ago)
hello sir, I appreciate the videos. i was wondering have you ever had a p1250 code? I read it can be due to not enough fuel pressure, what do you think? thanks.
50sKid (2 years ago)
Are you sure it's P1250 code? That does not seem to be a code that happens on BMWs.
Edgar Baez (2 years ago)
50sKid 2000 bmw 323ci e46
50sKid (2 years ago)
On what make and model of car exactly?
Majin Buu (2 years ago)
Do you know where the fuel pressure regulator is located on a 328i? I keep seeing that it is located under the hood?
Majin Buu (2 years ago)
50sKid thank you!
50sKid (2 years ago)
It's in the same place that you see me working in this video, it just looks different. The regulator is separate from the filter and its held in with a clip.
50sKid (2 years ago)
It's under the car roughly where your feet would be when you are sitting in the driver seat (on a left hand drive).
Mechanic and skills (2 years ago)
did you retest the fuel pressure ?
Mechanic and skills (2 years ago)
and it no longer drooped pressure! thank you for the upload great videos
50sKid (2 years ago)
Yes, the normal fuel pressure for an M54 is 50psi.
billy mitchell (2 years ago)
another great vidI see you have worked on M52tu...can you please tell me where  on the vacuum fuel regulator on top of motor ...the tube has no vacuum so am thinking it is split somewhere the Bentley tells nothing where it goes ....and absolute waste of money except for the codes and electrical diagrams but lacks what value components are  when I last emailed you about the replacement of Disa diaphragm you should do a vid on  this because it does gets trickyI just replaced my vacuum diaphragm on the DISA ...not hard but just have to apply lots of leverage with a long thin screwdriver and then getting it back together is not too bad...just have to line all the parts up ....my diaphragm was split right where it comes in contact with the edge of the top cap...can see this being a problem cause contact on the diaphragm should have been either flat or rounded but this is thin walled and can cut the diaphragm over time
billy mitchell (2 years ago)
will check stft and ltft when Wifie brings back the car ..so far have found vacuum leaks in top T/C gasket, oil filter body,Disa o'ring and diaphragm. plugged up exhaust flap,have to make a smoke machine if I can find a metal paint tin ,all plastic here   
50sKid (2 years ago)
It's a possibility. If your fuel pressure regulator diaphragm were torn, your fuel pressure would be low which could cause a lean condition but then again fuel would be leaking into that vacuum hose and getting sucked into the intake manifold which could cause a rich condition. So it's kind of tricky. Yes, a fuel pressure gauge would be the way to confirm that. What are your total fuel trims at 2500 rpm?
billy mitchell (2 years ago)
hmmm sometimes when I stop I can smell fuel vapour,so maybe it could be the regulator leaking, but at idle there seems no vacuum at regulator A fuel pressure gauge should  tell if there is a problem with regulator?.LTFT still show 11.7+ on both banks so there seems to  still be another vacuum leak 
50sKid (2 years ago)
The line on the top of the fuel rail runs from the fuel pressure regulator down under the body (approximately underneath the feet of the driver -- left hand drive cars), up along the side of the fuel rail and down to the CCV oil separator, which only has a little tiny tiny bit of vacuum. It's only purpose is in case the fuel pressure regulator diaphragm bursts, the gasoline vapors will be sucked into the CCV system and then into the intake manifold to be recycled.
bman502us jim (2 years ago)
a video on automatic transmission service
50sKid (2 years ago)
shot, coming soon.
James MacDonald (2 years ago)
what are the clamp size that i should get for the ones i need to replace ??
timpos546 (2 years ago)
How about the 320i with the M54B22 engine? does it use a filter with built in fuel regulator?
timpos546 (2 years ago)
Okey, thanks for the quick reply!
50sKid (2 years ago)
it should, yes
George Santana (2 years ago)
Hi 50s kid, I believe you responded to my questions regarding fuel regulator but when I went to read it I received a message saying "message reported" and I don't see your reply anymore. i apologize for the error and was wondering if you can repost? Also want to clarify that my concern is that if no vacuum is present at the small F tube fitting, especially during idle, that defeats the purpose of the fuel pressure regulator diaphragm... Any help is appreciated since I suspect there should be a vacuum during idle
50sKid (2 years ago)
+George Santana I think I've responded like 3 times already. The fuel pressure regulator on the M54 is regulated to the atmospheric vacuum coming from in front of the throttle plate, which is very small compared to the manifold vacuum coming from behind the throttle plate. You're not going to see any vacuum at that F connector when at idle, because that vacuum is created by air rushing past that opening when it's going through the intake boot and into the engine. At idle, the throttle plate is closed, and there is only a tiny amount of air going through (into the idle air control valve). In other words, you can ignore it. If you have 50psi in your fuel system while running, then that is normal. The sucking jet pump increases manifold vacuum for the brake booster by acting as a one way valve.
George Santana (2 years ago)
Hi, lots of great info on your videos. I measured 50psi fuel pressure on my E46 and it doesn't fluctuate with acceleration. It drops if I manually apply a vacuum to the small hose that connects to the F tube. I don't feel any vacuum coming from the f connector. Do you know what the vacuum measurement should be? Is the vacuum source supposed to come from the bigger jet pump hose? If so, what reading should I expect at the larger hose in case it is semi/clogged?
SKOOBIE TURNER (2 years ago)
Thank you Sir! My wife's 2004 325i had exact same symptoms : fuel pressure not quite 50psi (key to 2nd position & engine not running), Loss of pressure when key turned off, and pressure fluctuation of less than 50psi when engine idling. I changed filter last night and engine sounds as it should this morning--a slight beautiful hum!
50sKid (2 years ago)
+SKOOBIE TURNER Nice!
Dennis Canon (2 years ago)
What size is that vacuum line and how long would I need?
Eugene Stoner (3 months ago)
Looks like two sizes of vacuum hose, what are inner/outer specs needed? Want to change the whole ling back to the F connector, seems like it'd be way more than a foot?
79Pavlito (9 months ago)
What size is that in mm and do I just need normal vacuum hose ?
Dennis Canon (2 years ago)
+50sKid thank you for replying and making these videos and sharing your experise!! Really appreciate it!!
50sKid (2 years ago)
1/8" and less than a foot
dianna romero (2 years ago)
Love your videos!! I've been getting a few codes on my 2000 Bmw 323i wagon.. P1188 fuel control bank 1 sensor 1, P1189 fuel control bank 2 sensor 1, P0170 fuel trim bank 1 and P0173 fuel trim bank 2. Could the fuel filter be the problem? If it was your car, what would you fix first? Then next.. Thanks for any help you can give me.
50sKid (2 years ago)
+dianna romero Take a look at my fuel trims video for further help on this. Thanks for watching
Dennis Canon (2 years ago)
Would this be the same prcocedure for the 2003 X5. It has the M54 3.0 engine. Thanks for doing these vides. They are very helpful!!
50sKid (2 years ago)
Yes it's very very similar. You'll see a slightly different configuration of things where the fuel filter is. I believe the charcoal canister is next to it. But the fuel filter looks the same.
Mr Taco (3 years ago)
Great video! I want to try this DIY on a 2004 330ci but had a bad experience in the past. I did the same procedure on a 04 325i and the car would not start after the fuel filter had been changed. I could not figure out what caused the issue so I put the old fuel filter back into the car and it turned on. My question is, could it have possibly been a defective new fuel filter? If so, then what's the part number for my vehicle? Thanks in advance.
50sKid (3 years ago)
+moraleseli1994 You need the same filter that you see in in the video--I actually mention the Keyser part number, which isn't the bmw part number, but look on eBay and you'll find it. Keyser is the OEM brand and you can find it for a better price on eBay. Can't say why the car didn't start in your situation, except that maybe you mixed up the inlet and return lines (at the back of the filter).
Nice one, as always. Is it advisable to remove the fuel pump fuse and let the engine drain the fuel lines, to have a less messy procedure? Cheers.
50sKid (3 years ago)
+Gehmirnicht Aufdienuesse I did that in my video--it doesn't help. Be prepared to catch the fuel in a container.
david Crawford (3 years ago)
I have the xenon but no angel eyes if that's the same as angel eyes or whatever there called...
Yazan Alaya (3 years ago)
Thanks 50kids for your another great vedio, I am a big fan of you and your diy vedios now. My problem is exactly same as david Crawford . My car is E60 525i 2004with enginge M54 i replaced fuel filter which was horribly dirty , replaced also feul pump but the problem still exists. They told me to clean injectors because old feul filter was very dirty. Do you recommend me cleaning them to solve this problem and what is the correct way to clean them.
Yazan Alaya (3 years ago)
I haven't done feul trim yet. I will install the software and check..Thanks for the advice
50sKid (3 years ago)
+Yazan Alaya What are the fuel trims telling you? If you don't have high fuel trims (indicating that your car is under-delivering fuel), then paying for a fuel injector cleaning may be a waste of money.
rene alvarado (3 years ago)
Thanks again for the detailed intel. Really appreciate it. One question, that vacuum hose should that little piece be replaced or the whole line? Not sure where that line ends.
RegencyAxe (3 years ago)
50sKid, thank you and again awesome work.
50sKid (3 years ago)
+rene alvarado Little piece. It is rubber 1/8th vacuum line. The rest of the line is hard plastic. On a 323/328i it terminates at the end of the fuel rail (nearest the firewall) and on a 325/330i it terminates in the F shaped connector in the upper intake boot.
david Crawford (3 years ago)
also I hear the airport but it also sounds like someone's cutting grass haa. Thanks man. I just bought a 2000 328i also and love it so far,it has 150k and runs really good and the exterior is in excellent condition for a 15 year old car. I want to get it back to stock power at the LEAST.
50sKid (3 years ago)
You've got the M52 engine.  It's basically the same thing only the M54 has an extra 0.2 liters of displacement (and a few more horsepower), the different fuel system as I mentioned, and instead of the solid aluminum skid plate underneath the car you have 3 tubular braces in a triangular shape.  Also you've got the pre-body lift front end. No xenon cat's eye headlamps.
david Crawford (3 years ago)
+50sKid so what engine do I have if not the m54. and how much different are the two engines?
50sKid (3 years ago)
+david Crawford So be aware that you have a different fuel system--a return style where the fuel pressure regulator is separate from the filter. I'll be doing a future video on this one because a friend of mine has one that needs replacing, but it's actually extremely simple. You'll see the pressure regulator (it's got a vacuum line going to it) and you'll see that there is a sort of metal retaining clip holding it in. You pull that out and then just pull the regulator out (if you determine you need to change it).
david Crawford (3 years ago)
ok thanks a lot. I'm gonna go fuel pressure then check the fuel filter. the fuel pump is in the gas tank right?
David McMahon (3 years ago)
is on my 328i '98
david Crawford (3 years ago)
I was just gonna say lol Thanks man for the videos and the response.
50sKid (3 years ago)
+david Crawford Yep. Next week's video will be about replacing the fuel pump. ;-)
david Crawford (3 years ago)
hey man I have a question. I have a idle fluctuation only on cold start,not cold weather, and the car seems to fix itself or go away when I start driving. it stays at around 800 rpm then will drop about every 8 seconds to like 4-500 rpm then go right back up. I was told it could be a vanos? any help would be awesome. keep the videos coming.
Perfecto (6 months ago)
old question but still - if some of you have idle problems with cold starts with cold weather (below 13°C) and then when the car gets to temperature the idle is normal (and also when the problem goes away with cold start when the air temperature is warmer than 14°C) - THEN you have a problem with vanos on your M52TUB engine. The ar has special mode when the outside temperature is low, that it opens the vanos on neutral to build heat in as quickly as possible - that is why it is mysteriously occuring only when cold starting on cold day. On M54 this probably wont happen as it should have an electronic fix for that mapped in ECU. I am just writing it anywhere I can because it took me a lot of time to find the problem on miine, so you can sort out yours if it does the same :)
Gary Lee (3 years ago)
+david Crawford hi dude I don't know what hose had a split. The splits can be tiny and very hard to find
david Crawford (3 years ago)
Do you remember or know which one or were it's located.
Gary Lee (3 years ago)
Dude I've had the same problem before. Ended up being a split vacuum hose.
50sKid (3 years ago)
+david Crawford I don't think it's the VANOS. My guess--and I'm completely guessing here--is that there may be an intermittent fuel delivery problem--possibly with your fuel pump. I would check fuel pressure, first thing.

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