See full version: Should water pump spin freely
Without the friction of the drive belt and the engine NOT running, all driven pulleys should turn freely without noise when spinning by hand. The P/S pump and water pump pulley will have some drag (resistance) but still turn freely with little resistance when turned relatively slowly.
Accordingly, should impeller spin freely?
yes, if your engine is out, you should be able to spin the impeller by hand. you may have a bad pump liner. more
Without the friction of the drive belt and the engine NOT running, all driven pulleys should turn freely without noise when spinning by hand. The P/S pump and water pump pulley will have some drag (resistance) but still turn freely with little resistance when turned relatively slowly.
Keeping this in view, should impeller spin freely?
yes, if your engine is out, you should be able to spin the impeller by hand. you may have a bad pump liner. more
Replaced just my Tbelt, because i was broke at the time, well, 4mo later an idler went.
If it had gone at any other time. more
Been down this road, that's why I posted what I did in the first place.
I got lucky, it went at idle, stopped the motor, no dammage.
Just finished rebuilding my Whisperflo pump with a new seal plate (grommet housings were cracked bad causing shift, impeller was rubbing against diffuser face), new shaft seal, and new gaskets/o-rings.
Got everything put back together and just screwed the impeller on, but it seems like it turns/spins with the same amount of force as it did prior to me rebuilding the pump. My question is. are you suppose to be able to spin it and it spins freely in multiple circles on its own for a while? Or is it suppose to be able to just manually turn by hand? I can turn it by hand with no problem, but if I tried spinning it like a wheel/top, it will not spin freely for any period of time. more