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Old 07-20-2012, 07:10 PM   #1
Registered User
Join Date: Sep 2003
Location: Chicago, IL
Posts: 3,138
My Ride: 2001 TiAg 330i
Confirm fuel pressure problem for me please

OK, so I finally got a fuel pressure gauge to see if fuel pressure is the cause of my rough start. Please confirm:

Is the fuel pressure supposed to drop over the course of 2-5 minutes after the engine is shut off?

I seem to remember reading that the fuel system is supposed to be pressurized for at least a few hours after the engine is shut off. Is this so? Thanks.
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