LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Miss Fire please help!!!

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Old 07-14-2012, 05:20 PM
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Default Miss Fire please help!!!

a while back i blew the oil pump in my car but before that it was fine. so i changed the oil pump pick up cam gear new gaskets etc. but now my car is mis firing and i cant figure out why. i changed the spark plugs myslef to e3's. my dad said it could be a injector or a wire but im to sure. can you guys please help!
Old 07-14-2012, 06:26 PM
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i'd check injectors spark plug wires all the fun stuff, has the opti been replaced recently?
Old 07-15-2012, 03:49 PM
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Originally Posted by 96z28_lt1
i'd check injectors spark plug wires all the fun stuff, has the opti been replaced recently?
I tapped the injectors today still having that problem and I don't think the opti ever been changed
Old 07-21-2012, 07:23 PM
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odds are good its the opti...
Old 07-21-2012, 07:43 PM
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See if u have a spark plug wire arcing. Open the hood when it gets dark and see if u have a light show. If u have a temp gun u can use it to narrow down what cylinder is not as hot as the others. Then u can change a plug, then a wire, then a compression check. And so on. Good Luck.
Old 07-22-2012, 08:09 AM
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Just curious how did you blow the oil pump? How long did it run withoout oil psi?



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