I have a 1995 Astro with a 4.3 Vortec (CMFI). It won't start. When checking the fuel pressure it goes up to about 20psi when you turn the key to the run position and then drops to zero as soon as the pump stops running. If I try to crank the engine the pressure will get up as high as 40psi and then drop back to zero as soon as I stop cranking.
Before you point to the obvious, I have replaced EVERYTHING in my fuel system. Both the fuel sock and the inline filter, fuel pump and even the CMFI spider in the intake plenum. There are two things the Chilton Manual talks about that I haven't been able to find 1. fuel pump test connector and 2. the fuel dampener (pulsator).
I am ready to push it off a cliff! Any help would be great...
Please email me as well as post
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Thanks for the assistance.