1994 Chevy Spectrum 6 cyl Four Wheel Drive Automatic 96000 miles
4.3 w motor, have spark. Have 66lbs of fuel pressure but bleeds down fast, pinched off feed line after fuel filter after 2 second burst, have pressure but bleeds down fast. When cranking fuel pressure will not hold or build up to 66 lbs. Removed plenium, replaced regulator, same issue. Removed connector from spider, had 2 seconds of 66lbs, and when cranking, now have 66lbs but bleeds down, I have power to injector, but did not check for ground. Did not check for ground, Need help, thanks.