How to test a head gasket for leaks or failure #1 test for a head gasket leak —Combustion gas test kit Use this test if you have rapid overheating and pressurized radiator hoses and suspect exhaust gasses in your coolant If the head gasket fails between the cylinder and a cooling passage, the engine can pump very hot exhaust gasses into the coolant causing rapid overheating and over-pressurization. The over-pressurization can actually pop radiator hoses off the radiator. Each compression cycle pumps exhaust into the cooling system causing it to … Read More
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