1985 force outboard overheating problem

[Shifflett115]

i have a 1985 force 125 outboard ,about 2 months ago i had number 3 piston replaced due to the impeller went out and the engine overheating ,(the rings got stuck in the piston )i installed a new impeller and had the cylinder honed and the piston replaced ,after it was fixed it ran great until the other day we were out on the water and it overheated again and number 3 piston went out again. i got it home ,pulled the piston out ,honed the cylinder again (it honed out fine) and now im waiting for a weisco piston to come in , the only thing i didnt change the first time was the thermostat, can a thermostat stick intermintly or could there be somthing wrong with number 3 cylinder?

 

[roscoe]

Re: 1985 force outboard overheating problem

Plugged passage in the cooling circuit?
Try to back flush the block with garden hose - into the thermostat opening.
Hopefully you can flush a chunk of an old impeller out.
Richen up the carb mixture.

 

[wayne h]

Re: 1985 force outboard overheating problem

the thermostat can stick for sure and i would change it since they are less then 20 buxs . i do agree with back flushing the system and see what comes out .