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The mkiv Supra Owners Club

Losing Water


bens747

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Seem to be losing water quite alot. Have checked all the pipe work and can't see anything major and it isn't the head gasket. Correct me if I'm wrong but if the rad cap is weak. Hot pressurised water bypasses to the overflow tank and flows out. When the engine cools it sucks the water back out of the expansion tank back into the system. Giving the impression of a leak somewhere. I have to do some more checking like steam clean the engine and see if I can see anything else. But I feel it might be the rad cap. Any ideas would be greatly appreciated....... Ben :)

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