Forum Discussion
wolfe10
Dec 01, 2014Explorer
Yes, you have a problem if the level in the overflow does not change between cold and hot.
As suggested, air in your radiator can absorb the expansion as coolant heats (the most likely reason). But, if removing the radiator cap with the coolant cold shows coolant in the neck (no air) that is not the probable cause.
You can pull the hose out of the overflow reservoir and off the radiator neck, suck on one end with your finger over the other end to verify that the hose is OK.
As suggested, air in your radiator can absorb the expansion as coolant heats (the most likely reason). But, if removing the radiator cap with the coolant cold shows coolant in the neck (no air) that is not the probable cause.
You can pull the hose out of the overflow reservoir and off the radiator neck, suck on one end with your finger over the other end to verify that the hose is OK.
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