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Having issues with a 1992 chev 1500 4.3l I think its a fuel issue. replaced fuel pump, replace injectors and fuel pressure regulator from known running truck. had a power issue to the fuel pump so i have it hard wired to a switch right now so i know it is working all the time. I have good clean spark and have changed the icm. changed out the coolant temp sensor. Help please?????

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  • adam hall Jan 13, 2013

    ok so we checked the compression and all cylinders are great. very even. had it running the other day for about twenty minutes and it ran like a champ. went in for super and when i came back out it wouldn't start yet again. I'm getting ready to burn the thing. lol

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  • 16 Answers

Maybe a stopped up cat converter.

Posted on Jan 13, 2013

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SOURCE: hesitates & starts hard after it is warmed up 1992 5.7 gmc truck

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SOURCE: 1990 Buick Regal 3.1 has rough idle, hesitates and dies when accelerating.

A lot of new parts! Have a compression test done to gauge the engine's internal condition, and go from there. If compression is good on all 6 cylinders, scan for trouble codes. The compression test may find your problem, something like an exhaust valve burned or not seating properly.

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SOURCE: hard start-hot-1999 Chev 3500

need a o2 sensor

Posted on Dec 10, 2012

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