s.l.o.w

[td0020]

I have a 2000 Johnson 50hp outboard. I was out on the lake yesterday and was cruising along. I put the motor into neutral for about 30 seconds and again shifted into forward gear. At this time as i tried to accelerate the motor will not go and it sorta shakes, so my top speed was now about 6 mph.

I would assume this switched to slow mode. I was wondering if anyone had any experiences with causes ot solutions for this?

Thanks in advance...

 

[ezeke]

Re: s.l.o.w

S.L.O.W. is usually triggered by overheating. When that happens, the engine has already exceeded 200 degrees and is at risk. Time to replace the water pump impeller and check the thermostats.

 

[td0020]

Re: s.l.o.w

Thanks for the response. Could the impeller be damaged or need to be changed even though there is still a strong water discharge?

 

[ezeke]

Re: s.l.o.w

The problem with a tell-tale is that it tells you that the water pump is working, and nothing else. The water may not be going through the engine's cooling circuit at all.

 

[td0020]

Re: s.l.o.w

Thanks for all the info!
It's rocket science learning how these engines work!

 

[rebuilt]

Re: s.l.o.w

Yeah, they are a different critter compared to what a seasoned shade tree runs into. It's rewarding though. KR