Corpusfishing.com

[jighead]

Following up on another thread - Have a carbureted Yamaha 40 hp 2cycle. I've lost my taste for cold weather and don't go fishing much when gets cool and the boat sits for a few months every winter. And no matter what I put in the fuel/do, I seem to have gummed up jets come springtime. Other than rebuilding/tearing the carbs apart and cleaning them, I haven't figured out a solution. Run the carbs dry after every use. Have used Yamaha fuel stabilizer, StaBil. Tried starting and idling it every few weeks and I think that made it worse. Shot carb cleaner in it and that helps but doesn't clean the jets... Try to fill up at Rudys but not convienient.

Any suggestions or advice? (other than go fishing more often!!!!!)

PS- Are newer motors/injection systems better? I'm almost due for a new motor. Or can I just change to injectors/other carburetors?
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[joejoe7716]

In my opinion, running the carbs "dry" makes the problem worse. The motor will stall before all the fuel is out of the bowls. The fuel that is left will gum up clogging your carb jets. The only way to get all of the fuel out is to drain the bowls with the drain screw and spray a little carb cleaner in the screw hole.

Although fuel stabilizer helps some, I believe the best way to keep the carbs clean is to run the boat. letting the motor idle on a hose every few weeks helps some but does not flow much fuel through the high speed jets, only the idle jets.

Either do a 100% correct winterize job or run it.

[joejoe7716]

In my opinion, running the carbs "dry" makes the problem worse. The motor will stall before all the fuel is out of the bowls. The fuel that is left will gum up clogging your carb jets. The only way to get all of the fuel out is to drain the bowls with the drain screw and spray a little carb cleaner in the screw hole.

Although fuel stabilizer helps some, I believe the best way to keep the carbs clean is to run the boat. letting the motor idle on a hose every few weeks helps some but does not flow much fuel through the high speed jets, only the idle jets.

Either do a 100% correct winterize job or run it.

[mike35]

If you run all the fuel out of the carbs there is a process for that. It's not just run it out till it stalls. What you have to do is warm the engine up, then shut off the fuel and let the engine die at an idle. Then if you apply the choke and crank it over about 10 times ALL of the fuel will be out of the carbs. In my opinion, this process works better then anything. I have worked small engines for 15 years and I have never had to rebuild or clean my carbs due to gumming up. I DO NOT use stabil in anything of mine. Due to having to replace the injectors in my bike after they gummed up beyond repair/cleaning.

And if you follow that process you can also go one step further and take the fuel line off of the carb and add in some fogger to the carbs. There are a couple good fogger on the market including sea foam which is the one I use and would recommend. That's just what I use.

[spooledagain]

Seafoam. Miracle fluid.
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if it ain't broke, fix it 'til it is

[rodandroll]