how can i check water pump to make sure it's ok
removed and gutted old stat and reinstalled but left radiator hose off stat housing but still connected to top of radiator. duck taped a garden hose into loose hose and turned water on.
water flew through radiator, water pump, and engine and out of the stat housing. it appears there's no blockages. next i disconnected the hose at bottom of radiator and stuck the loose end in a container of water with the garden hose in it and ON (to keep it full) and the other end of the radiator hose still connected to the water pump. i then started engine to see if water pump would pull the water out of the container and pump it through the engine but it
didn't pump a drop. i checked and made sure the radiator hose in the container was free and able to suck water . what am i missing here? the water pump didn't make noise or wobble but i removed it anyway and on a mighty max that's no fun. it looks like a 3 year old water pump alright but there's no shaft play or stoppage and the impeller turns with the shaft. yes,
the engine still overheated after i gutted the stat which left about a one inch diameter opening.
Anyone got a thought about this? It's been a pain. sorry about the drawn-out story. richard
the only way i can think of to check a water pump, is to just put it together, and drive it around the yard or something. if it shows signs of oerheating, shut it off, and order a new one. i know that the water pump is a pain to remove, but if you just pull the fan off first, then loosen your belt, and then try to remove the water pump, it should be a little easier... good luck...
if you have it off see if there is any wobble or shaft play on the pully shaft! if it is still on a runny motir let it run awhile and shut it off 9/10 your coolent will leak on the or around the water pump
You must have a functional thermostat, this allows for the fluid to interchange at intervals with the fluid in the radiator. If there's no thermostat to create a delay then all of your fluid is at the same temperature inside the radiator and in the block, hot.
If you removed the water pump and inspected it i would be looking at other possible causes of overheating. Possible head gasket?
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