Cant start after heating up
Sometimes plugged cats can severely overheat expanding the catalyst material and blocking normal aspiration. if it starts ok when cool, check cat temps when running with infrared non contact thermometer. bad cats will often display temps in excess of 500 degrees. cats are built into manifolds on the six cylinders, one front one rear. sometimes heat shields prevent a good measurement.
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Hi dennis medilo velasco, we want to help you with your question, but we need more information from you. Can you please add details in the comment box? when you said heating up engine how hot did engine get was it like running without coolant ?
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