Engine trouble. Help

Jr.

Standing Tall
Staff member
Site Supporter
Location
Hot-Lanta
Remove the spark plugs , should spin easily by hand. At this stage could be anything from a hydro-loc to a jammed pump?
 
Well. It's the damn impeller. It's scraping against the edge of the housing and getting jammed. That's what's stopping the engine from turning.

I fitted a new one at the end of last year. But haven't had it in the water since. So I never tested it. Do I need to grind a channel into the housing for it? Or is it just my poopy installation? I know it's supposed to be tight. But obviously not this tight.
 
Wear rings can swell up around the impeller and lock it up, might be time for a new one. Did it spin freely when installed?

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As far as I can remember it did spin freely. But it was last year I installed it so I can't be sure. I have the pump housing off so ill check the alignment first and see if that does it.

Thanks for all your help guys. Much appreciated
 

smoofers

Rockin' the SQUARE!!!!
Site Supporter
Location
Granbury, TX
As far as I can remember it did spin freely. But it was last year I installed it so I can't be sure. I have the pump housing off so ill check the alignment first and see if that does it.

Thanks for all your help guys. Much appreciated
With the pump removed, you should be able to spin the drive shaft by hand. If the prop is barely scraping on the wear ring it is usually okay (barely meaning, you hear the scraping but it doesn't make the prop any harder to turn). If you can't turn it by hand, I wouldn't go through the trouble of trying to align the pump just yet. I'd get a different wear ring and start over.
 
Do you ride fresh or salt water? Galvanic corrosion can start between the stainless steel wear ring and its alloy housing (on a stock one). This distorts the wear ring/liner and forces it onto the impeller. Much more common on salt water 'ski's.
 
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