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

Car running bad after plug and wire change

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Old 03-21-2006, 05:12 AM
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Default Car running bad after plug and wire change

I replaced my plugs and was because my car was missing very badly it had stock old original spark plug wires. I got Taylors OTVC the kind you have to make (my freind who works at a stereo install place has been doing wires and stuff crimped them all for me)Iinstalled them and routed them. I also got stock A/C delcos didnt gap them just threw them in. Car runs and starts but misfires like crazy dont know whats up?
Old 03-21-2006, 10:24 AM
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maybe he routed them wrong?
Old 03-21-2006, 11:02 AM
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they are probably gapped incorrectly, i bought some AC delco plugs and they were gapped at .075, which would cause a misfire, try gapping them to .045 or even .035 if you want more performance.
Old 03-21-2006, 11:05 AM
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Are you getting any SES codes with this? An engine misfire should throw PO300, just curious did the problem start immediately after the plug/wire change or did it take a couple of miles? I'd definately check to see if he routed the wires correctly, the distributor is like 2, 8, 6, 4 from bottom to top on the passenger side, I can't remember the order on the drivers side, but it's printed on your distrib. anyway.
Old 03-21-2006, 04:25 PM
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Originally Posted by savethelinoleum
Are you getting any SES codes with this? An engine misfire should throw PO300, just curious did the problem start immediately after the plug/wire change or did it take a couple of miles? I'd definately check to see if he routed the wires correctly, the distributor is like 2, 8, 6, 4 from bottom to top on the passenger side, I can't remember the order on the drivers side, but it's printed on your distrib. anyway.
I replaced the wires one at a time to make sure they didnt get crossed I will check the order though. I dont think thats it becuse it sounds fine at idle.
Old 03-21-2006, 04:30 PM
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Optispark?
Old 03-21-2006, 04:36 PM
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Originally Posted by sdm1234
Optispark?
Wouldnt the car not run at all how does that work with the magical OPTISPARK.
Old 03-21-2006, 04:38 PM
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The optispark will miss under a heavy load, like during acceleration.




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