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

Lean idle misfire

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Old May 30, 2011 | 11:29 PM
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Default Lean idle misfire

OK, egr was changed old one was shot, no vacuum leaks, fairly new plugs & wires all tight and injectors good. Could this be coil or ICM?
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Old May 31, 2011 | 11:11 AM
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How do you know its lean? Can you tell what cylinder is misfiring?
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Old May 31, 2011 | 07:13 PM
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Try adding alittle propane through the pcv valve, if it smooths out any then you probably have dirty injectors. Have them cleaned, if you have em cleaned on the car make sure they do a double dose, meaning running on 2 cans of cleaner instead of one.
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