Q: Car ran hot and now does not start

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My 2009 hyundai sonata ran hot and cut off i added fluid and tried starting and nothing will turn over but not fire

Hi There, Depending on how hot the motor got, you may have damaged a cylinder head gasket, resulting in the motor not being able to maintain enough compression for the motor to run any longer. A blown head gasket may cause a number of different symptoms. A head gasket that fails between cylinders will generally cause a misfire and potentially compression leaks from one cylinder into another. Low compression will eventually result in a rough idling engine. When the head gasket fails between a cylinder and the coolant port, coolant may leak into the cylinder causing it to be burnt with the fuel charge in the combustion chamber. This often results in misfires on startup, especially after the engine is run, turned off and restarted. This type of failure may not always show with a compression test. I would recommend having an expert from YourMechanic come to your location to properly diagnose the symptoms you describe.

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