2002 Mercury Cougar Q&A

2002 Mercury Cougar Question: changed radiator n thermostat. Now problems bleeding air.Thermostat sticks shut

Thermostat sticks until I burp it. Hear bubbles in lines n motor. Added water behind then replaced thermostat. Could that be the cause why it won't bleed? -
Answer 1
How bad did it overheat before the radiator and t-stat were replaced? -
Comment 1
It got hot but has no symptoms of a bad head other than air bubbles and a thermostat that sticks every 300 miles. Other than that it runs good. Doesnt get hot till thermostat sticks. -
Comment 2
Thermostat 'sticking' because of air pocket. t-stat won't open until hot liquid hits it steam/hot air won't do it. Have it tested for a blown head gasket. Kits to test for combustion gases coming through cooling system are available at parts stores. -