sigh..... and now the other one, strbd side 97' 175 Johnson overheating

[Pole]

hello again gents,

after trouble with surging revs on port side, now the starboard engine is giving me stress.

If running for anything over a minute at about 4800 she will start to shake and shudder, loose power and the red 'hot' light will turn on. I bring her back to about 2000 for a while untill the light goes out and she stops shaking, then i can come up to about 3500- 4000 without too much problem.
The pisser is streaming strong.

any ideas?

again and as always many thanks for any advise.
pole

[ckjr]

sounds like the motor is going into the s.l.o.w mode-is the engine overheating? have you checked/changed the thermostats? when was the water pumps changed?

[Pole]

yes, overheating seems to definately be the problem. how often do you have to change thermostats and pumps?

thanks again
p

[m-keith]

I was getting an overheat alarm on my '89 225 Johnson when running at anything beyond a low cruising speed for very long. I have a fresh water pump, & like yours, my motor was peeing just fine. New thermostats seem to have solved the problem.