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#13750
Stan Thomas
Participant

There should be an internal inter-connecting pipe in the radiatior which automatically vents the L/H header. It is most important that it is in place, not only to allow the L/H header to fill properly, but because if it does not, when the trapped air in the L/H heats and expands, it forces coolant out via the overflow pipe.

Check this out on your rad – and also check the rad is earthed to the frame.

Stan Thomas.
Professor of snow-sweeping technology.
H.M. Borstal. Penkridge.