Radiator pressure

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    A friend of me has problem with the radiator of his PA 1931 model. The radiator is building up a pressure. He has checked all the cylinders and the cylinder head which seems to be in good condition. He also put in a new head gasket but there is still a pressure in the radiator. Does any one of you have an idea to solve the problem?

    Thank you!


    There should be an overflow tube below the filler neck, and that overflow tube prevents pressure from building up, in addition to taking care of minor overfills. The radiator cap itself should have a gasket, but it usually isn’t water tight, as many stains on radiator shells would show!

    I’d start looking at the overflow tube, though, sounds like it’s missing or plugged…….


    Thank you David. A pluged overflow tube sounds logically. I will bring that Message to my friend.

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