If the tubes on the radiator have been pinched off (was a somewhat common repair for a leaking tube way back when) and the open tubes are restricted by corrosion and crud, then the flow thru the radiator may be too restricted and the coolant pumped to the top of the radiator won't be able to get down thru the core and back to the engine. I'd recommend pulling the radiator and getting it looked at by a shop (although radiator shops are getting harder to find.) I've had radiators "rodded out" (literally removing one tank and sticking a rod thru the tubes to clean the crud out) to fix them.
Last edited by Peggy M; 05/09/2024 11:20 PM.
