Bad impeller?

[FishingFool34]

Bad impeller?

Ran the kicker yesterday for about 4 hours with no problems (4hp Johnson 4 stroke). I know it was spitting water out the couple times I went back to adjust the speed. Then I noticed white smoke coming out the side of the engine and ran back and shut it down quick. It must have gotten very hot and actually melted the sight glass on the oil reservoir (the "sight glass" is a plastic lens), it was spitting oil and smoke out of that hole after the lens melted out. I didn't look to see if it was spitting water at the time, I just shut it down as soon as I noticed the white smoke. I can't start it back up and check until I fix the sight glass and put oil in it. It was still running when I shut it down so I'm hoping I caught it before disaster struck. Did the impeller go bad and cause it to get that hot?

Edited July 5, 2017 by FishingFool34

[jlogger]

It would be strange for the impeller to just suddenly and completely fail, I think. It might have been a plastic bag or some other crap blocked up the water intake.

[garrymny]

Probably worth pulling the lower unit down and inspecting the impeller.

Sent from my XT1030 using Lake Ontario United mobile app

[marinerak87]

I had same issues with my Johnson once. It would pump then stop pumping. Initially I dropped lower unit and replaced water pump and housing. Started up and same thing. Turned out it was a bad thermostat which I never knew it had.

Sent from my LGL82VL using Lake Ontario United mobile app