1985 175hp yamaha 2cycle outboard temperature?

[cireg24]

Thanks to all that help out throughout this forum..shot the temp radar gun around sparkplugs area and got temperatures readings starboard side around 180 all 3 cylinders. Other side 136_145......how high should temp go sitting in drivewy with flush hose assuming starboard not cooling where do i start does this motor have 2 thrmostats

Water out of pea hole not strongest but decent will change that anyhow but one side is much higher than other...please chime in ty.

 

[N1NE1]

Re: 1985 175hp yamaha 2cycle outboard temperature?

I would start with the 2 thermostats and pcv valve

 

[cireg24]

Re: 1985 175hp yamaha 2cycle outboard temperature?

I would start with the 2 thermostats and pcv valve

Ok check thermostats and they are no good changing those....wheres the pcv valve is that the plastic with a spring towards bottom of engine below coil packs

 

[99yam40]

Re: 1985 175hp yamaha 2cycle outboard temperature?

yep, that is it.
Change water pump also

 

[cireg24]

Re: 1985 175hp yamaha 2cycle outboard temperature?

I changed 2 thermos The pcv valve and spring was checked out by dealer he said it looked good i put back in . Maybe a mistake. started boat it ran around 180f ran it for a few minutes and shut it off. the water out of peahole was good but cold like that wasnt coming out of circulation maybe thats normal. So im assuming 180-190 is tooo hot. So is it possible the water not circulate through the engine and come out of the hole should i have ran it longer maybe thermostats didnt pop being new they match original ones