I *think* the fuel pump runs for a short burst when you switch on to fully
pressurise the system then stops if you don't immediately start the car.
Then runs again when you operate the starter, of course, and continues to
run after that. Sounds like you have a leak somewhere or a faulty non
return valve in the pump. Even leaking injectors. A pressure check of the
fuel rail should show this - it should retain full pressure for some time
when the engine is switched off.
(If you had leaking injector(s) I'd expect at least slight problems on a
hot restart after say a couple of minutes)
*Keep honking...I'm reloading.
Dave Plowman email@example.com London SW
Don't forget to consider the ignition coils. They are 50 a piece for each
valve and are one of the main ignition causes of immediate ignition
This will take some looking into by a mechanic. You want to isolate the
problem before you throw money at it. Join this is you haven't already:
Wait 5 days and get your membership card. Find a nearby BMW mechanic(not
a stealership) that gives a 10-20% discount for the membership. Most
do. Get your car diagnosed for those symptoms. Let them check the engine
As it is now you are looking at 500 dollar parts no matter where you turn.
Make sure you find the problem before the fix. Good luck.
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