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livewell pump hanging up kenner 18v

On my Kenner18v the livewell pump seems to get a vapor lock or something very often. I've heard this mentioned before. What's the solution for this? A stronger pump? Not sure what's really happening. A slug of water caught in line that makes it hard for the pump to get rolling again or what? Do I need bigger diameter hoses? The pickup screen is not clogged.

regards Don
Aug 16
tks Mike,

No it never has worked right. Seems to be worse in a salt water situation and if anything it tends to work better when running at speed. Nothing I can think of has changed recently although it seems to have gotten worse. So its not the intake that's a problem.

So I agree with you that there is probably a loop somewhere where a slug of water is trapped and the pumped water can't make it over that loop. Occasionaly, you can here the water break thru as the pump revs slow down and then, gurgle, water starts coming out. The hoses run under the center console so its possible with vibration that they have somehow moved causing this loop to be created that you are suggesting.

I'll push around under there to see what things look like.

Other than this, this Kenner has really been a great boat. I enjoy it more every time that I take it out.

tight lines! Don
Aug 17
Usually this is caused by a "loop" in the hose trapping air between the pump and the tank. The hose needs to have a steady rise from the intake to the outflow into the tank. Also ensure that the pump intake is "always" underwater and not exposed to turburlance while underway, esp. at high speed. Without seeing your boat it's hard to pinpoint the trouble, did the system EVER work right? Any recent changes? New system? Follow the pump installation instructions? Good fishing Mike
Aug 16
   
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