110 johnson- one cylinder hot

[wayne nicol]

hiya all.
i have a 1987 johnson 110 hp ..
it runs great and i love it- however out the other day i got some kelp over the inlets. - now i dont know if my overheat buzzer even works after this episode( how could i check this??!), any way it got hot , and i shut it down- i let it cool and then restarted- it started and ran fine but the top starboard cylinder was really running hot- so i shut it down and limped home on the kicker. on the muffs at home, after changing that plug- it fired up and ran smoothly but that cylinder started to get hotter than the others- so i shut it down.

i always flush it after every use for at least 15 mins. i am sure the mechanics changed the thermostats- need to check my used spare s box first
so where to from here?

 

[Bob_VT]

Re: 110 johnson- one cylinder hot

Have the water deflectors ever been changed? If you have kept up with the thermostats and impellar the only two items would be the water deflectors (<my bet) or sand silt built up in the water jacket.

Deflectors are easy but will cost you the head gaskets but the deflectors are cheap small pieces of rubber hose.

 

[wayne nicol]

Re: 110 johnson- one cylinder hot

thanks bob
so can i check for silt when i do the deflectors, i only run in the salt- so i am sure there is some silt , albeit very little, but who knows where the previous owner ran it.
will get onto that today
thanks
wayne