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98 k1500 missfire

   
Old February 20th, 2013, 6:07 PM
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Default 98 k1500 missfire
I have 98 k1500 5.7L it has a missfire problem nobody can seem to find the cause including me any help would be appreciated!!! IT has a miss at idle and will stumble in gear when you first hit gas then runs fine up to highway speed once a steady speed it has a random miss\jerk..has plenty of power will not miss if you really gas on it..has been in every shop I know of and has had every sensor,dist cap,rotor,wires,plugs,cam sensor replaced no sel no codes Im so frustrated PLEASE HELP IF YOU HAVE ANY IDEAS
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Old February 20th, 2013, 6:49 PM
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Sounds like bad gas
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Old February 20th, 2013, 6:58 PM
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can't be bad gas its been doing this for 3 years
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Old February 20th, 2013, 8:53 PM
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Originally Posted by Joey Turner
can't be bad gas its been doing this for 3 years
Not being Merlin the mind reader, can you give more detail as in last tune up, plugs ect?
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Old February 20th, 2013, 10:02 PM
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Have you a compression test? That would rule out any internal problems.
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Old February 21st, 2013, 6:57 AM
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Whats the fuel pressure?could be a poppet in the spider injector assy sticking they make an upgraded version that runs much better
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