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2003 Johnson 9.9 water pump not pumping

C

Clark Griffith

New member
This now the fourth attempt at posting this. I am new to the forum and have searched for my particular problem with no luck.

My water pump quit and the motor over heated. It still starts first pull and runs great. I have rebuilt the pump twice with the full kit and it's been in the shop twice with no luck. The pump isn't pumping.

This is my trouble shooting thus far.

I removed the thermostat and the foot. I put the foot in a bucket of water level with pump housing. I then attached a three foot hose to the output of the pump and ran a drill on the drive shaft at low speed clockwise. The pump worked fine. Then I hooked a hose to a low pressure water suppl and the copper tube running up the leg to the power head. That worked fine as water came out the tell tale and the exhaust proving no blockage.

Then I hooked the hose from the output of the pump to the copper tube while leaving the foot detached. I ran the drill clockwise at varying speeds and it worked fine again with water coming out where it should.

I bolted the foot back to the leg ensuring the copper tube went in the grommet and leaving the thermostat out. I put the motor in a garbage can with the water level well above the pump. No water being pumped but it is pumping air out of the tell tale. I did this procedure ten times with exactly the same results.

I thought some how there was an air lock but if that were the case it wouldn't pump air either.

Any help appreciated, Clark
 
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Hi Clark, are you saying that your motor has been in the shop twice for the problem and has not been fixed? I hope the "shop" did not bill you.... unless you are referring to your own shop in which case, and after reading your account of pump tested in bucket and water line also tested for obstruction, I would say something happens when you put the foot back on, that prevents the pump from pumping, like maybe at the water tube connection?
 
It was in a boat dealer shop. They did charge me the first time not the second and then refunded my money from the first. I agree that something is happening when the foot goes back on. Most puzzling for me is how it is pumping air. It has very low hours as I have had it since new.

Clark
 
Some more trouble shooting.
I figured the pump might be air locking so I undid the bolts holding the foot to the leg just enough to leave a 1/16 inch gap between the two. Pump worked perfect. So maybe the grommet is getting pinched. I wiggled and jiggled the foot as I slid it back on. Nope no water. I then drilled a 3/8 inch hole in the leg abeam the water pump. The pump worked fine and water going everywhere it's supposed to. Pluggged the hole and no water.

Does anyone one have any ideas?????

Clark
 
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