Just take Jerry's advise and buy a combustion gas in coolant tester (at NAPA or Amazon). I used one recently while chasing a problem on a diesel tractor. Easy Peasy and quick, only takes a couple minutes. Then you know for sure if the heads gotta be pulled.
RonR
RonR
1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1964 CJ5
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