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Re: O/T: Pesky GM 4.3 V-6 Vortec
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Posted by buickanddeere on April 28, 2005 at 17:40:41 from (64.10.41.119):
In Reply to: Re: O/T: Pesky GM 4.3 V-6 Vortec posted by Maine Fordson on April 28, 2005 at 15:56:28:
It's the voltage across the fuel pumps supply terminals when cranking is the issue. Try a pressure gauge. My wife's GMC was ungly to start. Turns out the rubber pulsation snubber had split and was squirting fuel back into the tank. Check the grounds to the entire electrical system. There are several grounds on the engine. A high resistance connection will baffle the ECM/PCM/VCM. Or cause a weak spark.
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