Started having stange heating issues about a month ago. Sometimes the overheating is accurate and sometimes not (checking with IR thermo gun). Now car seems to hesitate from a stop in forwar or reverse. it has always has a small shake at idle but never hesitate. I do have small tiinnny bubbles in coolant I tried to check the combustion gasses with the blue die stuff but cannot get a reading. I tried to bring to to a couple diffrent shops for diffrent combustion check but they must not make anymoney off it because it seems no one "has the equiptment" any thoughts? should I just dump some gasket sealer in there for the meantime?

 

Sound slike it needs a set of plugs, and the cooling system and/or temp gauge repaired.

Doesn't sound like anything about a head gasket.

 

Could the above symptoms be for leaky fuel injectors by anychance?