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Gregarious · Joined: 13 Sep 2003 Posts: 86 Location: Los Angeles

Jes got home from the mechanix. 9pm since 6:30am. Tired. Anyways, the fuel pressure has begun to go from normal, to about 40, with no changes and no warning. Can't run on 40. And I didn't drive it home. New fuel pumps, new fuel filters, new injector sleeves. Latter is what we were doing. Any ideas? Thanx, D
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Smoothie · Posted: Tue Jan 25, 2005 6:42 pm Post subject:

My pressure was doing something similar as the fuel pump was going bad. -Fixed by replacing the main fuel pump.

Also make sure the flow direction arrow on the front fuel filter is pointing toward the rear. I'm not 100% sure this could be your problem, but have heard (read) that the innerds can shift and block the flow, so might as well check that it's on right.
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"..it's made in Germany. You know the Germans always make good stuff."

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CMXXXI · Joined: 05 Nov 2002 Posts: 1939 Location: Vicksburg, MS

Only other thing that comes to mind is the pressure regulator in the fuel distributor head. It is responsible for maintaining system-wide pressure. But, of course, if you pump isn't even generating it's "threshhold pressure", then it won't come into play. I'd suspect a bad pump first though.
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