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The black smoke could indicate worn piston rings. This would allow excessive amounts of oil into the combustion chamber and cause misfires and generally low engine performance.

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Q: Why does your 1989 jeep wrangler cut and miss out and put black smoke out the tailpipe?
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black smoke is usually a sign of bad piston rings, meaning they arent sealing correctly, and meaning that they need replaced which means a total engine rebuild basically.


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no they are a different bolt pattern


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