1990 525 with 2 fuel pumps..turns over rough - Bimmerfest - BMW Forums

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Old 07-12-2007, 12:25 PM
ErnD ErnD is offline
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Location: BrassCity,CT
Join Date: Jul 2007
Posts: 5
Mein Auto: 1990 BMW 525
1990 525 with 2 fuel pumps..turns over rough

Here it goes bought this car 6months ago.I've had the plugs,Distributor,Mass Ari flow,Fuel filter all replaced.I'm still having startup issues takes a good 3to5 minutes to trunover Once the car gets going it runs mint It has 2fuel pumps 1 underneath the hood and the other in the tank or located by the tank...

The past owners..One was a girl who's boyfriend was supposively a BMW mechanic..So who knows if this guy did a bunch of Frankenstein/Mickey Mouse..

Also the car belong to a FireChief if you flick the lights flash and all..So I'm not sure if this additional fuel pump was a Performance MoD......

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Old 07-31-2007, 08:01 PM
rastas rastas is offline
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Location: pa
Join Date: Dec 2006
Posts: 15
Mein Auto: 530i
on old BMW's and Porsches, i have a rule of thumb . . . Never let the gas tank go below half a tank, period. A race driver gave me that tip and it keeps the crud out of the engine!
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Old 08-09-2007, 11:37 AM
Paul Christian Paul Christian is offline
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Location: t.dot-ajax
Join Date: Jan 2007
Posts: 1,055
Mein Auto: 87.325is
^^^that is a good idea,well for any car that is....I have the same problum with my car sometimes but then again I am not stock anymore...
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