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E34 (1989 - 1995)

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Old 11-30-2005, 06:57 AM
95bmwnj 95bmwnj is offline
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Location: New Jersey
Join Date: May 2005
Posts: 2
Mein Auto: 1995 BMW 525i
1995 BMW 525I fuel issues

Anybody out there ever here of this? I had initial problem with the gas tank imploding.
It was like letting the air out of a balloon. That in turn broke the fuel sending unit in half
which had to be replaced. After about 6 months it did same exact thing. My mechanic
(a different one than before) has concluded there is issue with some kind of valve, and
some kind of tank (not gas tank). Sorry, its obvious I'm not that engine savvy.....
He is going to replace those items and flush the line. He has also replaced the "boot"....
The problem is the car just died while driving it down the interstate one night and will
not stay started for any extended period of time.....Does this sound common???
Any other ideas or suggestions????

Thanks in advance

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Old 12-02-2005, 11:36 AM
Road_Carver Road_Carver is offline
Getting there....
Location: Wheeling (Chicago), Illinois
Join Date: Nov 2005
Posts: 6
Mein Auto: 1993 525iT

Sorry to hear about that, I don't know anything about that, but you may get an answer over at bimmerforums.com, they have some know-how over there as well....

Don Stevens
Wheeling, IL
'93 525iT / 17" TSW Supermodels / Falken Ziex Tires / K&N Filter / JVC CD Player / more to follow!

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Old 12-05-2005, 11:53 AM
Smokiesman Smokiesman is offline
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Location: Bryson City NC
Join Date: Aug 2005
Posts: 5
Mein Auto: 95 MB E420 94 BMW 525i
Boy I may be out in left field but that sure sounds like a venting or lack of problem of some kind!

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Old 12-05-2005, 12:42 PM
bob corb bob corb is offline
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Location: Northants, UK
Join Date: Apr 2005
Posts: 5
Mein Auto: E39 530d Touring
It sounds like the purge valve has seized. This is the valve which sits with the carbon cannister and vents the fumes from the fuel tank into the inlet manifold. It should normally just pulse away but if its jammed open thent he depression in the inlet manifold at part throttle will suck the tank until it collapses.

I'm a little surprised that there isn't a one way valve somewhere which allows air to vent into the tank - perhaps thats an explosion risk???

Good luck.
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Old 12-05-2005, 06:53 PM
SharkmanBMW SharkmanBMW is offline
On the HI-Way of Life
Location: Montreal
Join Date: Oct 2005
Posts: 239
Mein Auto: '94 540i, '03 330Xi
go here...
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