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You own a 97 Chevy Tahoe with a vortec 5.7L engine cylinder 6 is misfiring plugs and wires are good and it only seems to misfire at idle what should you check and how?
Wiki User
∙ 14y ago
That style of distributor cap SHORTS out inside of the molding where you can't see it with the naked eye. Replace cap and rotor with a factory one from the Chevy dealer only.
First of all you need to remove the #6 plug and install a compression gauge in it's place and check cylinder compression, You should have at least 125 PSI to 150 PSI reading on that cylinder. You should always compare the reading in the cylinder beside #6 too.
If you have under 90 PSI. in #6 then you either have a burnt valve are piston, broken valve spring, bent push rod.
If you don't find your problem in this area, then please ask your question again.
You didn't brake #6 plug installing it ???
Wiki User
∙ 14y ago
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If your engine has a distributor cap then I would replace the cap and rotor with a FACTORY OEM. Cap and that should fix your problem. Now if you have the new stayle engine that don't have a distributor cap then I would replace the coil that is mounted on the top of the valve cover for the #6 cylinder.
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