No water flow with '74 Mercury 9.8

[Gregk]

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????

 

[huntin dawg]

Re: No water flow with '74 Mercury 9.8

Sounds like the exhaust cover gaskets are shot.

HD

 

[64osby]

Re: No water flow with '74 Mercury 9.8

Not trying to be insulting, but do you have enough water to cover the inlet when it's running? I use a small tub and have to have the hose running in it because the water level will drop when the engine is running. If i didn't run the hose I wouldn't circulate water in teh engine.

 

[Gregk]

Re: No water flow with '74 Mercury 9.8

yes, the inlet's about a foot or so deep.

 

[Mi duckdown]

Re: No water flow with '74 Mercury 9.8

Not a fan of trash cans to check water flow. water gets aerated way to fast. personally I like muffs. .02

 

[Gregk]

Re: No water flow with '74 Mercury 9.8

no place for muffs on this little outboard.

 

[Mi duckdown]

Re: No water flow with '74 Mercury 9.8

You are right to some degree. There is setup for that motor. you have to remove prop. Merc dealers have them. the water intake is on bottom of cavitation plate. YES?

 

[Gregk]

Re: No water flow with '74 Mercury 9.8

the water intake is on bottom of cavitation plate. YES?

yes.

 

[Mi duckdown]

Re: No water flow with '74 Mercury 9.8

If you use that. DO NOT PUT THE MOTOR IN GEAR. YOU WILL OVER REV. WITHOUT PROP. No water resistance, Neutral only.