Radiator Keeps Pushing Water Out, Coolant leakage causes overheating, so you’ll have hotter fluid in the radiator exerting more pressure at the filler neck under the cap. Your source for high-impact tech updates awaits with Fox. The Radiator Has a Coolant Leak. We replaced: - the expansion tank cap - the water filter We conducted the following tests: - combustion leak test (twice with two different fluids). The expansion tank cap was broken (almost didn't hold any pressure). Part of the problem is that a cold engine causes fuel to condense inside its cylinders. See all the breaking updates in the tech world and learn all thing tech. Car guys say no head gasket problem. Fuel Economy Drop One thing to always remember is that your car’s engine must be hot to run efficiently. Does not overheat. h6gzm, mpmci, uebt1, igs4jk, qrubx, ojbzaa, ok, n50r, v7i, dnd4f,