If I were you, I'd buy one of those head gasket test kits that uses blue fluid to test for CO2 in the coolant. They're only around $20 at the parts stores.
you put the test tube with the fluid over the radiator filler neck while the engine is running. A vacuum tube is connected to the vacuum port on the intake manifold.
If CO2 is detected in your radiator the blue fluid turns yellow.
This indicates that exhaust gases are entering your water jacket - most likely through a damaged head gasket.
This hot exhaust gas may be what is causing your engine's coolant to heat up so rapidly. If nothing else, it will rule out an exhaust leak into the cooling system and allow you to focus on other areas.
Last edited by Otto Skorzeny; 09/06/2026 10:05 PM.
