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Ed in Maine · 03-30-2018, 02:15 PM

I think John Buckley is correct, you have a leaking head gasket and the combustion gases are building up in the block and pushing the water up and out the overflow pipe. This will happen even when the motor is cool. Are there any bubbles coming up in the radiator fill that you can see when the car is running and the cap is off?
You may need to change the head gasket, check for flat head surface and use Permatex spray head gasket sealer and torque the head many times as the engine heats up. Ed

Ed

03-30-2018, 02:15 PM	#27
Ed in Maine Senior Member Join Date: May 2010 Location: Washington Cty., ME or Flagler Cty., FL Posts: 1,106	Re: running hot I think John Buckley is correct, you have a leaking head gasket and the combustion gases are building up in the block and pushing the water up and out the overflow pipe. This will happen even when the motor is cool. Are there any bubbles coming up in the radiator fill that you can see when the car is running and the cap is off? You may need to change the head gasket, check for flat head surface and use Permatex spray head gasket sealer and torque the head many times as the engine heats up. Ed Ed