Quote:
Originally Posted by Dick M
I agree with 30 Closed Cab post #3. It is entirely possible that you will not see any coolant leaks around the engine or coolant in the engine oil. You certainly could have a blown head gasket allowing compression leakage into the cooling system. The compression leak creates a pressurized cooling system forcing the coolant out of the overflow pipe when the engine is running. I would buy the kit and check to see if any exhaust gases are in your coolant. This certainly could be the answer to your problem.
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As an FYI, the reason I did not additionally suggest a compression/leakdown testing is from his info seems his motor was recently rebuilt. Readings could be misleading if motor is not yet broke in.