Changed the fuel filter now its making noise when the fuel pump is priming.

[dan4g63]

Yesterday I changed the fuel filter as a precautionary maintenance i didn't have any problems or noises with the old one. Now the new filter makes very loud and weird noises when the fuel pump is priming or when trying to start the car. Anyone else experience this?

[Teratorn]

Same here. No issues with the old one but changed it anyway since I was at 70K miles. Mine doesn't make any noise when priming, just when starting the car. Once the car starts, the sound goes away. The sound it makes is like a bad electric motor. I changed my fuel pump thinking that was the problem, but the sound is still there. I also thought I may have accidentally reversed the hoses, but it's on the way it should be. Thinking of replacing it again.

[Exanimas]

I had the same issue. According to an indy shop and the stealership, the filter was bad. Had it swapped and it's been fine ever since.

[rowlands57]

Had the same problem with one filter, cannot recall the brand. Went to OEM and all was fine again with no noise at start-up.

[kwimberly]

That sounds like what was happening when I decided to change mine. When I would start the car I would get kind of a metallic, hollow, chugging sound from the fuel filter area. Changed the filter and the sound went away.

[SilvA4Q]

i cant remember the exact thread but someone said that the reason it makes that noise is because of the internal fuel regulator inside the filter itself. mine has been doing it for a couple months now and i've somewhat got used to it but at the next servicing i will definitely go back to oem. i dont think it is doing any harm to the fuel pump, just embarrassing when you have people in the car at startup, i just cough really loudly when its starting!!!!

[A4 Moda]

Actually funny you say that. THe aftermarket one is probably what destroyed my Bosch 040. It was restricting fuel pressure starving the injectors of fuel. How do I know that? On oem filter, I was able to handle my 71R eliminator setup. But after changing it out to the aftermarket one, my fuel pump had to pump a lot harder to get fuel pressure in the rail. On my oem pump + aftermarket filter, my car would detonate @ 12 psi of boost. So go figure. OEM wins.

whoever designed those aftermarket ones need to put out a recall, they are destroying motors.

OEM guys. Pass this on too, it's important.

[dan4g63]

so what aftermarket brand is everyone running? The new filter i put in is made by Hengst and its making the noise. Anyone with OEM Audi and the noise?

[kwimberly]

Mine was OEM Audi and made the noise. I figured it was just the sound an OEM fuel filter makes as it starts to die with over 80k miles on it.

[dan4g63]

yours was old, i want to know from the people with filter noise from brand new filters, what brand were they oem or aftermarket.

[RottieA4]

I just replaced mine a week ago with OEM straight from Audi. Was getting the loud hum from passenger rear side. I was hoping it was only the filter, but the noise is still there. I'm assuming fuel pump is on its way out so I'm going to replace that as well. If it stills hums like a bitch then I'm out of answers

[jmw241]

I just replaced mine a week ago with OEM straight from Audi. Was getting the loud hum from passenger rear side. I was hoping it was only the filter, but the noise is still there. I'm assuming fuel pump is on its way out so I'm going to replace that as well. If it stills hums like a bitch then I'm out of answers

I got the OEM filter aswell. I get the hum you speek of. I think it's normal, or hope so.

[dan4g63]

do you guys get the hum as the car is running? i only get a beeping/chirping noise when the fuel pump is priming or im starting the car thats it, once its on its quiet

[RottieA4]

I dont think its normal, because it has progressively gotten worse. From what I've gathered, it is the fuel pump working under heavy strain, producing the noise.

[RottieA4]

do you guys get the hum as the car is running? i only get a beeping/chirping noise when the fuel pump is priming or im starting the car thats it, once its on its quiet

Ya only when its running. It goes through the priming stage without incident, but once running it produces the high pitched whine/hum. With the windows up and radio off its really noticeable, even when standing outside of the car.

[rowlands57]

How many miles do you have? It sounds like the pump is giving you a 'heads-up' that it's about to go. Mine did not do that, it just died at about 68K.

[A4 Moda]

No it's not normal. The fuel pump should be silent. Those who still have the hum or a louder hum after you replace the fuel filter can be praying for a new pump. Because that's what's going to go out. THe Aftermarket filter (mine is Hengst) made that really loud rasp/humming noise upon startup, then it would go away.

F*ck this. I'm not going to blow my 044. I'm going to switch it back to oem.

Just to clarify OP, You and I are talking about the FILTER making the noise right? NOT THE PUMP. My pump is fine. it's an 044 and it's going to be loud, but I'm okay with that. we are talking about the filter (brand new filter) with a sufficient pump (semi-new or new oem pump, or other aftermarket fuel pumps).

[Teratorn]

I installed an OEM filter and the filter was making the sound. Will be replacing it again next week.

[dan4g63]

Yes its the filter that makes the noise not the pump and its not a hum, its a beeping/chirping ONLY when the fuel pump is priming or the starting the car.

[jlB6]

I've just replaced my fuel filter that i got from the dealership item#8E0-201-511-L and mines making some rattling noise n getting some vibrations from where the filter is. I gave them my vin in hope to get a correct one so i doubt i got the wrong one. Even my engine check light began to flash

[PDX04a4]

No it's not normal. The fuel pump should be silent. Those who still have the hum or a louder hum after you replace the fuel filter can be praying for a new pump. Because that's what's going to go out. THe Aftermarket filter (mine is Hengst) made that really loud rasp/humming noise upon startup, then it would go away.

just for another experience, i replaced my fuel filter about a year and half ago with an OEM filter i ordered from ECStuning. i didnt notice much humming prior to changing it, but noticed it after. its always been apparent since then. recently i noticed the same weird sounds, mechanical like, from the filter/pump area. its been well over a year and i havent had any problems engine wise, boost wise, etc. i have taken the car on a long trip and put probably close to 15k miles on the filter since then.

im thinking of changing the filter and seeing if that makes a difference, but it may not since i used OEM in the first place and have had the symptoms since then. just a thing to consider.

[dan4g63]

UPDATE:
So i returned the Hengst filter and bought one from the dealership and no more noise. Just to clarify i never had a hum from the fuel filter when the car is running, its was a beeping noise only when the fuel pump was priming or i was starting the car. Maybe i had a bad aftermarket filter i dont know.

[SilvA4Q]

Do you have the part number of the filter you got from the dealership? I think it's time to replace my Hengst with the correct OEM one.

[dan4g63]

For my 2003 the part number is: 8E0-201-511-J

[SilvA4Q]

dan4g63 - did the filter that you bought from the dealership not say Hengst on it? Was it different? The reason I ask is that I bought my fuel filter from AutohausAz and the part number for the filter i received is identical to the one you listed above. Is it possible that the part numbers will be exactly the same but the item itself is actually different? I might just get under the car and see what my filter says because the website says that Hengst was the oes for the filter so the should be the same.

[kwimberly]

dan4g63 - did the filter that you bought from the dealership not say Hengst on it? Was it different? The reason I ask is that I bought my fuel filter from AutohausAz and the part number for the filter i received is identical to the one you listed above. Is it possible that the part numbers will be exactly the same but the item itself is actually different? I might just get under the car and see what my filter says because the website says that Hengst was the oes for the filter so the should be the same.

I actually took a picture of the filter I got from the dealer:

[dan4g63]

The OE Audi filter is not made by Hengst, its just like in the picture kwimberly posted. I think KYG is the brand. And yes they all carry the same part number you have to watch for who makes it and make sure it says "original equipment" or just get it from the dealership, suprizingly it was cheap at the dealership i went, "only" $50. The aftermarket Hengst was $45.

[komseh]

I was told by a VW/Audi master tech to never use anything other than OEM fuel filters... changing mine soon too.

[Spike00513]

I changed the fuel filter, with Mahle KL858. eBay, made in China.
The dealer calls for 8E0 501 211 J
But this one is 8E0 501 211 G
(Both 4-prong w/ internal regulator)

Upon key(on) and priming, there's a loud noise like a bad electric motor or something.
Knockoff filter? Sub-OEM quality?
I've read this is the sound of the pump straining.

[seanf86]

I changed the fuel filter, with Mahle KL858. eBay, made in China.
The dealer calls for 8E0 501 211 J
But this one is 8E0 501 211 G
(Both 4-prong w/ internal regulator)

Upon key(on) and priming, there's a loud noise like a bad electric motor or something.
Knockoff filter? Sub-OEM quality?
I've read this is the sound of the pump straining.

I did this on my wifes car as it sounded like a sewing machine when starting and running, now on part throttle cruising it sounds like its humming and the new filter I installed was apparantly OEM or OEM supplier and was purchased locally, it came in the same white box and no stamping like the genuine one I bought from ECS for my B6 which doesnt make noise.

spike the G suffix is for a fwd, im not sure what the difference is, they both look the same and some places list the same # for fwd and quattro.

[Spike00513]

I did this on my wifes car as it sounded like a sewing machine when starting and running, now on part throttle cruising it sounds like its humming and the new filter I installed was apparantly OEM or OEM supplier and was purchased locally, it came in the same white box and no stamping like the genuine one I bought from ECS for my B6 which doesnt make noise.

spike the G suffix is for a fwd, im not sure what the difference is, they both look the same and some places list the same # for fwd and quattro.

L, which was superceded to G, is quattro AFAIK. And G, being FWD.
Their site lists the filter, as fitting quattro though. IDK why the difference. Internal regular pressure difference or something?

I'll take a video of pre-start prime. But other than that, I don't think I can hear any noise. I'll lift the seat, and try to listen to the pump, and listen+feel the filter, to see if there's any noise.
There were a few times where the engine felt like fuel was cutting out.

[seanf86]

L, which was superceded to G, is quattro AFAIK. And G, being FWD.
Their site lists the filter, as fitting quattro though. IDK why the difference. Internal regular pressure difference or something?

I'll take a video of pre-start prime. But other than that, I don't think I can hear any noise. I'll lift the seat, and try to listen to the pump, and listen+feel the filter, to see if there's any noise.
There were a few times where the engine felt like fuel was cutting out.

Interesting to know that they superseded the quattro filter to fwd as last I checked ecs had diff #s still listed.

Edit Looks like J is quattro and L is fwd according to ecs

[Charles.waite]

I bought a Hengst brand filter a few years back to replace my oem filter because it was making walrus noises on cold starts. That worked great for two weeks then sounded even worse than before. I then bought an OEM one and the sound went away immediately and never came back. I did eventually replace my fuel pump though because it started making chirping/whining noises while driving. I decided I didn't want to wait until it failed and would prefer to just presumptively replace it.

I cant comment on the part number predicament, but personally I wouldn't trust an off brand filter because I don't think the regulators are built to a high standard. I would go OEM from a trusted source like GAP.

[USAF Long]

Good info. Guess I'll just go order one at the dealership since I don't want to deal with this bullshit.

[jacobsen]

I did this on my wifes car as it sounded like a sewing machine when starting and running, now on part throttle cruising it sounds like its humming and the new filter I installed was apparantly OEM or OEM supplier and was purchased locally, it came in the same white box and no stamping like the genuine one I bought from ECS for my B6 which doesnt make noise.

spike the G suffix is for a fwd, im not sure what the difference is, they both look the same and some places list the same # for fwd and quattro.

My pump sounds like a sewing machine when I let the fuel pump Prime. I was thinking my pump is going out?

Sent from my SM-G920V using Tapatalk

[seanf86]

My pump sounds like a sewing machine when I let the fuel pump Prime. I was thinking my pump is going out?

Sent from my SM-G920V using Tapatalk

could be, or a bad filter. My wifes car is still making noise, not sure I want to gamble it being pump or filter and spending money on one when its the other, going to try a used pump from the wrecker for trouble shooting since its only $25 and go from there.