How do you know when a car piston is bad?

Updated: 4/28/2022
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12y ago

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Depends on how bad the piston is. I would ask you what the symptoms are that has made you feel the problem is a piston. It might be something else. Pistons don't usually give trouble in modern engines but all sorts of other things do. If the engine is misfiring then it's almost certain to be something other than a piston - maybe fuel system or electrical system.

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Q: How do you know when a car piston is bad?
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