Tohatsu 9.8 4 stroke smoking a lot on the idle

raczekp1

Lieutenant
Joined
Mar 30, 2010
Messages
1,327
My friend got 2007 tohatsu 9.8 hp . manual chocke
. motor got carb cleaning with high wibration metod.
Now motor starts with no problem.accelerate fine.
but after while on the idle in the backet motor start smoking from the upper relife hole.
smoking apers when motor is on the boat transom.
whit cloud at the back.
spark plugs are black but no oil residue.
powerhead is worm at around 70 deg Celcius- termostat is working
water pump is working fine..
chocke is working good.
whats the problem with this smoke cloud
 

pvanv

Admiral
Joined
Apr 20, 2008
Messages
6,555
Normal exhaust idle relief. Steam.
 
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