Re: 1934 Eight water pump

Posted by Greenfield On 2022/4/30 6:27:39

An infrared thermometer would be my first step. You can get them cheap, like $25 at Home Depot, and will register the temperature of any surface you shoot it at. What I would do is run the engine for 15 minutes, then use the IR thermometer to take the temperature at the top hose, then work your way down and across the radiator till your at the bottom hose. The top hose will receive the hot coolant from the head, the bottom hose puts the cooler coolant back in the engine after it circulates through the radiator. The idea is that if bottom temp is still room temperature, but the top is 150 degrees, then that tells me the pump isn't circulating well. If the bottom is warmer - say 120 degrees -- then the pump probably is working. If your car has a water jacket, then, on mine at least, it can be removed and the impeller on the water pump be viewed. Don't know why the pump would be clanking unless the shaft/bushing is so worn that the shaft is banging back and worth while operating (?) Might be a good time to drain all the coolant, remove the jacket, back flush the radiator, clean out crud in the head, and inspect the water pump while your at it.