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#1
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Cylinder 4 misfire Code P0304
2003 Monte Carlo, was running fine and then engine vibration. Pulled the P0304 code. Pulled the Cyl 4 plug and checked with an inline tester and get good spark indication. Any suggestions?
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#2
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Re: Cylinder 4 misfire Code P0304
If the wire is good and the plug you could try a compression check. No compression from a burnt valve or something would also make the code show up.
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