Reply to "Advice post engine build, engine runs hot at idle"

74gtsMember

@stevebuchanan posted:
Our cars are very susceptible to retaining air in the cooling system. Air pockets will cause a variety of problems including overheating at idle. To diagnose this look inside the swirl tank the next morning after the car was up to temperature. The water should be immediately at the top. Otherwise there is air in system. If the water is low, add more coolant and bring the car back up to temperature. Then check it the next morning and repeat this until it is full.
Also, make sure the overflow tank is about half full. If it is empty then it will keep pulling air into the system.

Steve-Appreciate the response and have confirmed swirl tank is full with overflow about half!

10/9/228:42 AM

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