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Gurgling and Boiling when shut down on hot days

889 Views 6 Replies 6 Participants Last post by  mjs182004
My 93 fleetwood has 200+ thousand miles on it. When I stop after short drive on hot day it sounds like it is boing and gurgling? I see no fluid loss under vehicle or anywhere. My reservoir fills normally when running and goes back to radiator when cooled. I took cap off and ran with heater on and it boiled up and over a little. I can see the fluid in radiator bubbling with cap off. The cap "looks ok"?? Am I in trouble? help!!:bigroll::bigroll::bigroll:
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rent a pressure tester and maybe even get one that can test the cap too. small leaks could be like a tiny drip from the thermostat housing, loose or cracked hoses, etc.

It could be that you don't see the leak because it is evaporating as it falls out since it's likely only leaking when running. Do you notice a smell of coolant?
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