Q: My car has trouble starting when the engine is hot, I never have a problem in the morning or when I get off work.

asked by on January 16, 2017

I thought it was the battery but I changed it and I'm still having the same problem. I'm not sure what it could be that is being affected from the hot engine.

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Hi there. It sounds like the ignition coils are getting hot and when the engine is shut off, the engine will not restart due to an ignition coil that will not produce a spark. Remove one spark plug wire at a time and check for spark on the engine with a spark tester tool. If the tool is adjusted to 30 thousandths and the spark starts jumping around, then the coil would need replaced. If the spark is good, then I recommend replacing the spark plugs and wires. If you need further assistance with your engine not starting when hot, then seek out a professional, such as one from Your Mechanic, to help you.

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