Leaking out of radiator cap I replaced cap and it still leaks

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z_40k in Nekoosa WI

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Mar 11, 2016

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Popular Answer
pushrodon Mar 11, 2016

Crack in radiator plastic end cap or its seal is leaking and appears to be coming from the cap .. 'more' than likely.

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Tskeeteron Jun 18, 2016

Had similar problem after installing a new radiator. So, installed a new cap, then a second new cap. Still smelled antifreeze and could sometimes see small amount of antifreeze at the base of the filler neck. Put a small hose clamp on the hose to the overflow tank. Problem solved. Apparently after 165K miles the flexibility of the hose decreases so that it won't seal.

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pushrodon Jun 18, 2016

Yep, that does happen quite often .. after "installing a new radiator" and that hose is removed and re-installed.

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