[substance B]

Does anything know that they corrected this issue with the upcoming lci or the is? I want to get the '11 3 coupe but if this issue is going to running the entire life cycle, it may be a deal breaker....wth is BMW thinking?

[serg1282]

Other than the fact that there's a new pump (943), which has been in since Dec '09 builds, there's no information suggesting a newer pump will be used in either the LCI 335i or 335is.

[Oulixes]

Originally Posted by substance B

Does anything know that they corrected this issue with the upcoming lci or the is? I want to get the '11 3 coupe but if this issue is going to running the entire life cycle, it may be a deal breaker....wth is BMW thinking?

There is no information in public domain whether the HP pump problem has been solved. There is a relatively new pump (-943), but it is too soon to say if it would on average last longer than the previous ones. Since the pump is a deal breaker for you, you may want to read the sticky at the enclosed address. It is long, but it contains most information published by car owners who have had problems with the pump.

http://www.e90post.com/forums/showthread.php?t=333519

As far as the new N55 engine goes, it is still not clear whether or not it shall inherit the N54 HP pump problem. It is known that the N55 will have one turbo instead of two, but it may have the same or very similar induction system as the N54, and the same pump. We have to wait to see the new engine in operation.

[thlax]

Originally Posted by substance B

Does anything know that they corrected this issue with the upcoming lci or the is? I want to get the '11 3 coupe but if this issue is going to running the entire life cycle, it may be a deal breaker....wth is BMW thinking?

if your going to get an '11 coupe. and not an "IS", youll have the new n55 engine i believe so it shouldnt be a problem

[BayMoWe335]

Originally Posted by thlax

if your going to get an '11 coupe. and not an "IS", youll have the new n55 engine i believe so it shouldnt be a problem

Yeah, you'll just be guaranteed other problems.

[rrosen]

Originally Posted by thlax

if your going to get an '11 coupe. and not an "IS", youll have the new n55 engine i believe so it shouldnt be a problem

Is not the n55 engine also direct injection. If so, it will have a HPFP. Whether it's the same pump I don't know. So I'm not sure you can say no problem.

[claykin]

Originally Posted by serg1282

Other than the fact that there's a new pump (943), which has been in since Dec '09 builds, there's no information suggesting a newer pump will be used in either the LCI 335i or 335is.

Its not confirmed that all 12/09 build E9x have the -943 pump. For instance sometimes SA built cars start 1 month later than German built.

Some think the new pump is really hogwash and BMW is just buying time with the NHTSA on a recall. I suppose we shall see.

BTW, my dealer shop foreman is convinced the problem is related to dirt in the fuel causing the pump to clog and not ethanol damage like some people claim. He told me that in their experience they had a high rate of people claiming they started getting long cranks after allowing the fuel tank to run very low before fill up. Is that true or just speculation is anyone's guess!!! If so, maybe a better pre-filter is what they really need.

[ragingclue]

Originally Posted by claykin

Its not confirmed that all 12/09 build E9x have the -943 pump. For instance sometimes SA built cars start 1 month later than German built.

Some think the new pump is really hogwash and BMW is just buying time with the NHTSA on a recall. I suppose we shall see.

BTW, my dealer shop foreman is convinced the problem is related to dirt in the fuel causing the pump to clog and not ethanol damage like some people claim. He told me that in their experience they had a high rate of people claiming they started getting long cranks after allowing the fuel tank to run very low before fill up. Is that true or just speculation is anyone's guess!!! If so, maybe a better pre-filter is what they really need.

What? How is dirt getting to the HPFP? Filtering gas is not hard. I'd be shocked if it was just a filtration issue. We woulda had an easy fix by now.

[claykin]

Originally Posted by ragingclue

What? How is dirt getting to the HPFP? Filtering gas is not hard. I'd be shocked if it was just a filtration issue. We woulda had an easy fix by now.

To make high pressure you need to compress the fuel through tiny little ports. Think of the way a jet engine works. Filters aren't perfect and if they are designed to trap the tiniest particles, you'd need to replace them way too often.

I'm in no way advocating this as the source of the problem, I'm just leaving it open to discussion.

BTW, I like your signature.

[E92-Lighting]

N55, so we will see if this issue can be fixed or not