Stop the smoke

[mikes 86]

I have 87 125 force outboard,motor runs great, it has small spit or back fire almost every time i go to start it, after it spits it fires right up on the next crank, but that is not the big problem, every time the motor is at idle it will start smoking as if it were a cold start in the morning,what if any thing can i do to lesson the smoke at idle need help !!!!! Thanks !!!!

 

[roscoe]

Re: Stop the smoke

1 Decarb the engine.
2 Clean the excess fuel scavenge system, make sure it is not clogged.
3 Switch to a full synthetic oil and don't add any "extra".

 

[SkiDad]

Re: Stop the smoke

i use Pennzoil Synthetic blend - 3.99 a quart at most places - only smokes on first start.

Roscoe, what is the "excess fuel scavenge system" and where is it at ?

 

[mikes 86]

Re: Stop the smoke

thanks for the response guys,when you say decarb are you referring to running sea foam through the motor? something i have not done before, how much and does it go in the mixed gas? and where is the scavenge system located, i do have a book but not sure where to look I am looking forward to giving this a shot with high hopes, I am sick of the smoke!!!!! THANKS

 

[foodfisher]

Re: Stop the smoke

It's also called the fuel recirculating system. Smaller hoses close to the block. A " search" will bring up many references. Decarb is also referenced many times through a search. The aerosal and liquid (seafoam/deep creep) have directions on the container. I'm convinced the smoke will drive you to search and follow directions. It did me with positive results.