Packard Forum Index » Pre-War (1899-1942)

I have been chasing a problem with the car not cooling. I've forward and reverse flushed both the engine and the radiator at least two times each. I have taken the water pump off and it seems to be functioning correctly. I took the water jacket cover off. The cylinder bank looks OK. The water jacket cover is intact and unobstructed to all the holes. My guess is the radiator has some clogs in it, a by-product of using an ill advised cylinder head repair solution some time ago. Bottom line is that I think I need to take a hard look at doing something with the radiator. So...any suggestions of what to look out for or do?

Suggestions include performing a radiator flow rate test, and checking the radiator for hot spots indicative of blocked or restricted tunes. Both are quite standard diagnostic tests for radiators.