Quote:
Originally Posted by NeCrOmAnCeR
Have you replaced the overflow hose itself? Have seen them get soft and collapse rather than draw coolant back to the radiator. Have also seen the radiator neck designed wrong to where there is not a good seal with the outer sealing ring. So when the cap opens to purge pressure the coolant that comes out manages to flow down the hose to the overflow, but when the system cools the imperfect seal pulls air instead of coolant.
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I haven't. I bought a new one after the last round of head scratching, but lost it in my messy garage. I need to try it.
Slonaker