quote:I will have the coolant tested for combustion gases
Mark,
I may have slightly mislead you on this one. I should have said to check for combustion gasses in the "COOLING" system, not in the "coolant".
Basically, the test consists of replacing the radiator cap with a testing device. The engine is then started and run for a few minutes. I would do this first.
Check the head bolt torque on a few of the bolts that have easy access (without removing anything). Start with about 90 ft lbs and see if the bolt holds or turns.
John