[PKL]

Originally Posted by JAYHAWK

Just doing a search to see if anyone else has had fuel pump failures with the N55 engine. I have a 2011 335 M Sport sedan and had the fuel pump fail with only 2100 miles on the car. Prior to the fuel pump going out, I had already made three other trips to have the car serviced within the first month of getting it. One visit was for adaptive headlight malfunction, which occurred the very next day after the got the car! A week later, the Service Engine light came on and it turned out to be the tank vent valve. A week after that, the Service Engine light came on again! So four trips for service within the first month! The latest visit was fuel pump failure - the car went into limp mode and I was stranded at a shopping mall - couldn't make it back to work after lunch. This is my second 335 - my previous was a 2008 convertible - two fuel pump failures on that car before I got rid of it. Not sure if I should keep my 2011 sedan (it's a lease - my 2007 convertible was a purchase). I don't know what my options are of getting out of this sedan lease - only had it for 5 weeks.

What's the build date of your car? Roughly

[shockin330i]

And did they get an engine code or just replace it? Some of the n55 owners had their hpfp replaced with no codes...

[JAYHAWK]

Originally Posted by PKL

What's the build date of your car? Roughly

Build date is 05/10.

[JAYHAWK]

Originally Posted by shockin330i

And did they get an engine code or just replace it? Some of the n55 owners had their hpfp replaced with no codes...

Please educate me on what the benefit of getting an engine code is. Looking at the service report, I can't tell, but I don't see anything about an engine code. I'm guessing they just replaced it.

[drexplode]

Originally Posted by PiZauL

Wonder if the F10 335i and F30 535i will have fuel pump issues, I believe they both have the N55. I'm sure hell will be raised once the new series start running into failing pumps.

new 4cyl engine will feature a different supplier - not Continental

[LindaTheCat]

okay, I've been following this thread for some time. Myself is a 05/2010 built 335i owner. Luckily has passed that date line.
Anyhow, I have realised that we all just focused too much on the pump itself. HAve you thought about the "fuel" we actually put into our cars everyday? I used to fuel my car with the top-notch 94 in Canada, had a few times couldn't start off my car, but with no engine failure light on. Even since the sales told me that BMW Canada "Recommends" Shell and Petrol Canada, I've got little issues. Well apart from some slightly hesitated starts. Is there an issue that is related to the fuel pump?

[Glim]

Yes, the fuel may be the cause, the process to remove sulpher from diesel fuel corrodes and destroys the HPFP seals, the same thing may be happening with the refinery process for north american gasoline.

Do they also have mass failures in Europe or anywhere outside of NA and Australia?

[gcreese]

The HPFP failed on my 2011 335i xDrive coupe (N55; build date of 4/11). I was getting long cranks (around 5,000 miles), I took it in, and they replaced the HPFP. The comment by the SA was, "We weren't happy," along the lines of "We know it's been a problem with the N54s, we were hoping it had gone away with the N55s." I think the incident rate is way down, but it's still an issue with the newer engines.

[Built My Way]

Come on BMW fix this damn thing. Put your engineers in a room and promise them anything; beer, porn, battlefield 3. Just get the job done!

[Cozy]

Originally Posted by Glim

Yes, the fuel may be the cause, the process to remove sulpher from diesel fuel corrodes and destroys the HPFP seals, the same thing may be happening with the refinery process for north american gasoline.

Do they also have mass failures in Europe or anywhere outside of NA and Australia?

It's not so common over here in the UK, well not if you use decent fuel. High octane fuel here tends to be of very good quality but expensive, BP and Shell perhaps at the top but ESSO also provide a 99RON fuel (94/5 Octane) via a large supermarket chain. As our fuel here is so expensive, people, especially for daily drivers, will only use our standard 95RON fuel, this is known to be of varying quality and if a bad batch makes it out to the fuel stations is known to cause running issue on any car. I swear by the performance fuels due to the cleaning additives in them, various tests by UK magazines and tuners have revealed that after consistent use the fuel system and engine are considerably cleaner than when compared to low quality 95RON. I had HPFP failure BUT I suspect this to be down to the previous owner using crap fuel, she gets nothing but the 99 from me.

[Sara]

I'm on my third long crank

[sA x sKy]

Originally Posted by Sara504

I'm on my third long crank

I've had like 5-7 long cranks with my car since I got it (nov '10) but haven't had any since August. I wouldn't worry about it Sara.

[Sara]

Originally Posted by sA x sKy

I've had like 5-7 long cranks with my car since I got it (nov '10) but haven't had any since August. I wouldn't worry about it Sara.

Number 7 AND number 8 yesterday.....

[Dark_Knight_335]

Originally Posted by Built My Way

Come on BMW fix this damn thing. Put your engineers in a room and promise them anything; beer, porn, battlefield 3. Just get the job done!

Lmao
Awesome.

[F3_BMW]

Let's just hope you got a bad one.

[reprod]

Ok, well I've got about 16000 miles on mine so far and I haven't had not even one long crank. These have been city miles too. I only fill up with Sunoco 93 but that shouldn't make a difference.

[bimmerguy1988]

I have a 2011 335 with 3500 miles and most recently when I start it up the idle "surges" I guess thats the best way to explain it. Its not normal idling even when its cold...Could this be an upcoming fuel pump issue? Would it be worth it to bring it to BMW?

Thanks

[Fred_Boosted]

Originally Posted by bimmerguy1988

I have a 2011 335 with 3500 miles and most recently when I start it up the idle "surges" I guess thats the best way to explain it. Its not normal idling even when its cold...Could this be an upcoming fuel pump issue? Would it be worth it to bring it to BMW?

Thanks

Cold start or warmed up?

Any codes?

[bimmerguy1988]

no codes and both cold and warm starts

[JUSTIN808]

my car has been has been taking a long time to start 4-5 sec. Took it in for oil change and told SA. He ran diagnostics and told me the fuel pressure was low and he had to order a fuel pump.

My car is a 2011 bmw 335 e92 with 14500 miles.

I know this is a old thread but I would like to know if people are still having problems with fuel pumps after replacing on N55 motor. If so I am going to trade my car in and buy another car. I don't want to deal with problems.

[moorlander]

mine was replaced at the 30k mile checkup.

Is BMW replacing it with a new one of the same make/model/design or are they replacing it with new design. I'm asking because I'm curious to know if I should expect it to fail again.

[N55Jamaican]

I know this an old thread but I needed to do some reading up on the HPFP issues as I suspect that my is gone.

My question is there any good after market ones that will out last the stock ones from BMW? I also see some being sold on ebay stating that I will even get a rebate if I send in back my old one.

I see in the N55 turbo upgrade there is an after market upgraded fuel pump added for extra fuel delivery. I really dont need extra fuel delivery as I doubt I will be making 700HP for now but could the application be used for mild mods?


Please need some good advise