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Muskie Fishing -> Muskie Boats and Motors -> No water flow with '74 Mercury 9.8
 
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Message Subject: No water flow with '74 Mercury 9.8
gregk9
Posted 5/26/2010 4:30 PM (#442822)
Subject: No water flow with '74 Mercury 9.8





Posts: 797


Location: North Central IL USA
Water pump and impeller was replaced last year and I've only used the engine a few minutes here and there just to keep in running shape. It was working fine when I tested it last time out last fall.

Now I'm getting no water flow but I *am* getting air flow out of the pee hole.

If I blow air into the pee hole, it comes out the water pump inlet hole.

When I blow air into the inlet hole, it blows out of the pee hole.

I put the lower until in a tank of water, fire it up; no water out of the pee hole but lots of airflow.

What gives????
jakejusa
Posted 5/26/2010 4:41 PM (#442824 - in reply to #442822)
Subject: RE: No water flow with '74 Mercury 9.8




Posts: 994


Location: Minnesota: where it's tough to be a sportsfan!
did you run it for a decent amount of time. The impellers can get dry & brittle. I think I'd take it right back where I had the work done. I had a situation just like this on a motor that quit pumping when my son was running it. Unfortunately it was my brothers motor. So you know how that goes...I had a dealer I did not know put a new impeller and test the pump. Apparantly he had a new impeller but it was really old and brittle. Held together for about a three week period and all that was left was a nobby wheel! The dealer fessed up when I brought the part back in to him. He replaced it no charge but I had to do the install as I had taken it apart.
twells
Posted 5/26/2010 4:44 PM (#442825 - in reply to #442822)
Subject: RE: No water flow with '74 Mercury 9.8




Posts: 393


Location: Hopefully on the water
I would check 2 things. The first is the "pee-hole itself to see if anything got in there over the winter to partially block it. Secondly I would check to make sure the hose that connects between the 2 are intact and hooked up right and not cracked. I had a similar issue with the main motor and it was just some sand that got clogged. I was able to ream it out gently and blow it out and no problems after that.
karol
Posted 5/27/2010 2:44 PM (#442930 - in reply to #442825)
Subject: RE: No water flow with '74 Mercury 9.8




Posts: 576


Location: nappanee IN
put your "muffs" on it. it might have a spider web in there and your hose can blow it out. worked for me..karol
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