1997 pro v yamaha water pump problem

Buddyz/28

Cadet
Joined
Apr 21, 2010
Messages
6
I changed the water pump kit,plastic housing,poppet valve and spring in my outboard . Now at my tell tale stream it is erratic .and at the guage its up and down.pulsating
 

99yam40

Fleet Admiral
Joined
Sep 7, 2008
Messages
8,851
Re: 1997 pro v yamaha water pump problem

I take it the gauge you are speaking about is a water pressure gauge.
Sounds like you did not get it back together properly.

Maybe the key fell out and the impeller is slipping.

Or maybe the dampener is letting exhaust gases to get to pump.

Not much that I can think of would cause pressure to come and go
 

Buddyz/28

Cadet
Joined
Apr 21, 2010
Messages
6
Re: 1997 pro v yamaha water pump problem

Thanks 99yam40.Yes i am talking about the water pressure guage sorry.I get a stream out the tell tale hole,but its not a steady flow.it pulsating.I will drop the lower unit and ck the impeller were it slides on key.Also change the damper seals.I will do it on the 31th,and let you know Thanks again buddy
 

Buddyz/28

Cadet
Joined
Apr 21, 2010
Messages
6
Re: 1997 pro v yamaha water pump problem

I changed the damper seal,No luck water stream at tell tale hole,still pulsating. water pressure guage reads 5 lbs. at idle with ears and graden hose.At any r.p.m. above water pressure guage neddle is up and down.guage needle is up and down.
 
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