Anyone else worried about the fuel pump failures???

[Carlitos_SS]

I was hoping that by now BMW would have solved the high pressure fuel pump problem, but the failures seem to keep popping up on E90post. I sure hope this is resolved before the 1er comes to the States. I know the 1er will be one helluva performance value, but I can't see myself buying a vehicle knowing how high the chances are for it breaking down.

'Los

[inTgr8r]

Has there been any reported issues with the revised replacement pumps?
I don't recall hearing of any.

This engine is going to be BMWs bread & butter for the foreseeable future.
You can count on them figuring out the fuel pump problem. (& the over heating).

[brando1985]

Worried? Absolutely not.

[vintage42]

Originally Posted by Carlitos_SS

I was hoping that by now BMW would have solved the high pressure fuel pump problem...

Is this only on the 135 which has the higher pressure direct injection (vs the 128 with port injection)?

[Carlitos_SS]

I've just noticed several threads on e90post where people are experiencing symptoms of HPFP failure with their replacement pumps and needing their cars serviced, again...

Here's one of several examples:

http://www.e90post.com/forums/showthread.php?t=77664

'Los

[Vornado]

Originally Posted by brando1985

Worried? Absolutely not.

I eat fuel pumps for breakfast.

[casey.shuff]

My Fuel pump went out after 300 Km, but I have not had a problem since it was replaced.

[WolfsburgerMitFries]

Originally Posted by vintage42

Is this only on the 135 which has the higher pressure direct injection (vs the 128 with port injection)?

Yes, regular fuel injection operates around 4-6 bar, direct fuel injection systems operate up to 200 bar. One thing I find funny, Volkswagens 2.0L turbo 4 (which has won numerous awards) has direct injection, but there is no sign of premature fuel pump failure in those cars. I find it odd because neither BMW or VW make fuel pumps, the likely are both buying from the same supplier in Germany like Siemens VDO.

Here's a BMW relevant press realease from Siemens VDO
http://www.siemensvdo.com/press/rele...0604_002_e.htm

For those who don't know, 1 bar is about 14.5 psi. Unless you're Irish.

[Brookside]

Originally Posted by inTgr8r

Has there been any reported issues with the revised replacement pumps?
I don't recall hearing of any.

This engine is going to be BMWs bread & butter for the foreseeable future.
You can count on them figuring out the fuel pump problem. (& the over heating).

They did - and if anyone clicks on the e-90 link above you will find that it's a bunch of chuckleheads who are putting low octane fuel (91 min for N54)
and even ethanol mixtures who've experienced trouble with the replacement pump.

C'mon- BMW goes out of its way (decal on interior of fuel-tank lid) to warn all BMW drivers not to use low octane...and then these idiots who've shelled out 40k+ on a 335 pour ethanol mixtures and cheapo gas in the tank.
Unbelievable.

Legally, when this is done the owner/leasee has broken the contract- tho I've only heard of BMW taking the car back (a 335) once from a friend of mine who works in a New Jersey dealership.

So, can we stop with the scares?

[WolfsburgerMitFries]

Originally Posted by Brookside

They did - and if anyone clicks on the e-90 link above you will find that it's a bunch of chuckleheads who are putting low octane fuel (91 min for N54)
our ethanol mixtures and cheapo gas in the tank.
Unbelievable.

I've noticed that in the midwest, particularly traveling to Chicago, even "top tier" gasolines like Shell have a sticker on ALL the fuel pumps that say "Contains ethanol". Sadly, sometimes alcohol in your gas is simply unavoidable.

Here's a relevant article about "top tier" gasoline for those unfamiliar with the ummm...lets just call it marketing.
http://www.toptiergas.com/

[joelk]

i plead ignorance. perhaps someone can help me understand. i was under the impression that ethanol additives to gasoline raised the octane of the fuel mixture.

if that's the case, and people driving performance cars need higher octane gas, then why do people look down on using ethanol? does it damage fuel line components in other ways?

thanks for any info!

p.s. from that link above even Top Tier gas is required to have a minimum of 8% ethanol.

[kurichan]

Originally Posted by joelk

i plead ignorance. perhaps someone can help me understand. i was under the impression that ethanol additives to gasoline raised the octane of the fuel mixture.

Nope. It's a different additive.

Ethanol is a fuel component that displaces some petrolium based gasoline in the mix. It actually contains less energy per volume than petrolium gasoline.

if that's the case, and people driving performance cars need higher octane gas, then why do people look down on using ethanol? does it damage fuel line components in other ways?

Yes. It's corrosive to many components that have been used to date, but using ethanol tolerant components in production is not a HUGE challenge. GM and Ford have done it I believe.

[joelk]

thanks for the explanation but this confuses me a little then

"The standard "blending octane value" for ethanol is about 113. Normally one litre of ethanol blended with 9 litres of petro-gas raises the octane of the 10-litre blend to the next grade level. For instance after blending 9 litres of petro-gas with one litre of ethanol, Regular Unleaded (87 octane) becomes Unleaded Plus (89-90 octane) and Unleaded Plus becomes Premium (91+ octane)."

http://www.gov.mb.ca/est/energy/ethanol/ethanolfaq.html

anyway it's not that important to me ... i just just curious. thanks!

[321]

Originally Posted by WolfsburgerMitFries

For those who don't know, 1 bar is about 14.5 psi. Unless you're Irish.

How did this slide by?



edit: thought i would add something... Xylene has an octane rating of 117

[kurichan]

Frankly, I'm more worried about basic build quality and the rear suspension.

[WolfsburgerMitFries]

Originally Posted by kurichan

Frankly, I'm more worried about basic build quality and the rear suspension.

What issues would there be with the rear suspension? From what I understand, its basically the same 5 link IRS as found in the current 3 series. Has that been problematic?

[Carlitos_SS]

Here's another one. Freakin' ridiculous. As much as I would like to own a 135 I'm having some serious doubts about the reliability of these pumps. I sure hope BMW does something FAST!

http://www.e90post.com/forums/showthread.php?t=83073

'Los

[Carlitos_SS]

Originally Posted by casey.shuff

My Fuel pump went out after 300 Km, but I have not had a problem since it was replaced.

I noticed in your info you own a 325. Do those also have High Pressure Fuel Pumps?

'Los

[ichiban]

i'm sure bmw will fix this ... again. but if not, are there any aftermarket options out there?

[321]

Originally Posted by ichiban

i'm sure bmw will fix this ... again. but if not, are there any aftermarket options out there?

I don't think bmw has anything to do with fixing it.. I believe it is in the hands of Siemens AG. Sadly there isn't any other options at this point.

[ibeam81]

I was under the impression that the fuel pump issue had already been addressed. Are there still problems with the new pumps? :iono:

[midlife]

Originally Posted by Carlitos_SS

I've just noticed several threads on e90post where people are experiencing symptoms of HPFP failure with their replacement pumps and needing their cars serviced, again...

Here's one of several examples:

http://www.e90post.com/forums/showthread.php?t=77664

'Los

1/ from what i understand, some of the "replacement pumps" could have been brand new pumps ...but the old design.

2/ also, i understand that the new pump is a bosch, and the older pumps were the siemens.

i am getting my 2008 335 in about 45 days, i am just hoping i will have a new BOSCH HPFP !

my guess is that:
1/ BMW still has the older siemens pumps in stock
maybe they are still using these siemens pumps as replacement pumps
2/ I AM HOPING that all new cars with N54 motors have the new BOSH pump.

anyone out there no for sure of any of my speculations?