Blahhh i know this has been brought up but search is yielding nothing.


Pretty sure its just an adjusment but after turning the key to off the engine will idle for about 5 seconds before dieing. Carb adjustment? (Stock carb)

Every once in a while, mine does the same thing. It did it to me Saturday night, and it was throwing flames from the exhaust. Clearly it was sending unburned fuel into the exhaust, but how do I stop that?

Letting them idle a bit before shutting down will help some

Hey coot, i think you forgot to add oil into your aviation fuel for that badass ride of yours. Oh and dont forget your after burners next time.


As far as everyone else, i run 93. Ill try some cleaner. Thanks

water in a hot chamber goes snap - krackle - pop goes the carbon. yamaha ring free is a very good additive to use. a little safer than water or atf.

Honestly, how well does that Yamalube ring free actually work?

craig once seen a 6 1/2 hp intek that was carboned up so bad. from old gas that the valves were sticking a little from old gas and varnish. two treatments build up was pretty much gone. i started useing then. its not snake oil.

How often do you run/use?

Is this something you add with each fill-up or is it better used on a scheduled basis?

every second tank of fuel. third if i forget

i use an old spray bottle and just mist it into the carb.

Just take the filter off the top and spray a mist or two directly down in it?

i just kinda keep it running like shit for about 10-15 seconds, then let it catch back up and idle for about 10-15 seconds and then repeat 2-3 more times.When i am done i let it idle for 10 or so minutes. I've never actually taking the head off after i did that to see how well it works. Sometimes it helps it idle smother other times it doesn't.

I gotcha; I may try that tomorrow afternoon. My neighbors already look outside at me every I have it cranked up in the street. They'll really be wondering what the hell is up with me when I'm out there spraying water in the top of the motor... Oh well, I just hope I'm not gonna kill anything in it! Somebody stop me if I'm about to do something stupid!

Use your water hose mister nossel, then your neighbors will think your a nut for sure

Guys in the diesel world spray water/ meth in the intake to Cool boost temps, but it also cleans the intake tract and valve train aswell! Basically they spray windshield washer fluid.

I use ring free on the 250 on the big boat but have not put it in my mud rig