coolant goes to overflow but doesnt return to radiator while system is pressurized.i replaced the radiator cap n still have same results.
Feb 15, 2011 at 9:07 AM
2000 chevy venture
EIGHTBALL727
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It won't go back with system pressurized. Once the engine starts cooling there is a contraction which creates a vacuum in the cooling system, that vacuum will draw coolant from reservoir. Some of the others may be able to explain it better than I?
Feb 15, 2011 at 11:29 AM
if it's not returning after cool off you likely have a engine gasket problem/faliure.
Feb 15, 2011 at 1:08 PM
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