C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

rough running eng

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Old Oct 18, 2015 | 05:45 PM
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Default rough running eng

just bought a 94 coup, power washing eng and would not start. let it set a couple days and it started but still runs ROUGH. Now where do i start to fix it. 64,000 miles
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Old Oct 18, 2015 | 06:25 PM
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well you just did the worst possible thing you could have done. sounds like your going to learn about the opti spark. do some reading in here. if you have a little heater with a fan put it on the opti on low heat and pray.

then look at it in the dark look for arching and sparking along the spark wires clean and a bit 0f dielectric grease and make sure all click twice.

Last edited by antfarmer2; Oct 18, 2015 at 06:35 PM.
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Old Oct 18, 2015 | 06:39 PM
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Default rough running eng

Originally Posted by antfarmer2
well you just did the worst possible thing you could have done. sounds like your going to learn about the opti spark. do some reading in here. if you have a little heater with a fan put it on the opti on low heat and pray.

then look at it in the dark look for arching and sparking along the spark wires clean and a bit 0f dielectric grease and make sure all click twice.
well i run it up to temp, let it set for a hour now wont start. looks like i got a big lesson coming! thanks
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Old Oct 18, 2015 | 09:15 PM
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The Optispark for the 94 is not vented, check out PETRIS OPTISPARKS.

you did the worst possible thing by power washing the engine. Not only did you clean the engine...but look like it cleaned out you wallet at the same time.
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Old Oct 18, 2015 | 09:37 PM
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do not toss the old one and lock your hammers up for awhile

but first leave the low heat fan on for a few days

and clean the drain hole by the gas cap before you learn another trick

Last edited by antfarmer2; Oct 18, 2015 at 09:41 PM.
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