Question about 1997 Pontiac Sunfire
I would suspect a head gasket or head problem.. the catalytic converter being plugged causes heat build up in the engine and overheating in the engine can cause failure of the head hasket or head itself. The reason your cylinders are misfiring could be water leaking from a water port in the head and into the cylinder which would cause the cylinder not to fire..there might be some steamy vapor coming coming out of the exhaust if that is happening
Posted on Mar 25, 2011
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Posted on Jan 02, 2017
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