Hopefully tracked it down to a faulty thermostat that was new and tested before installation when I removed the radiator for cleaning a few months ago
Decided to replace it with a lower temp opening one so when I tested the existing t/stat it would not open even if the water was boiling
So have replaced the 82 deg one with a 78 deg and refilled the radiator and burped it to remove trapped air and will be doing an oil & filter change before the next event so fingers xx ed the problem has disappeared
Decided to replace it with a lower temp opening one so when I tested the existing t/stat it would not open even if the water was boiling
So have replaced the 82 deg one with a 78 deg and refilled the radiator and burped it to remove trapped air and will be doing an oil & filter change before the next event so fingers xx ed the problem has disappeared