Diesel JD
Full Access Member
Man I think you probably have an external head gasket leak. Clean off the block real well and get a cooling system block tester and see where your leak(s) are. Do you have a real gauge or still the factory gauge? Normal range is 190-212*F. Warmed up. If you had a head gasket leak the biggest sign is dumping coolant like crazy. Also if it is antifreeze...you will smell this sickening sweet pungent odor around the tailpipe and wherever the smoke is.