Petcock SUPRISED me!

[compaqkoci]

well i went on a great duning expedition for spring break and on my last day i am out riding and i cannot for the life of me remember if i turned the gas on. i thought to myself..."well its been 10 mins of riding i can't run that off the carb". so i thought nothing ouf it, we get to the end of the rideable dunes and we stop to let the motors cool down. i look down and the damn thing is OFF :arrow: :D ........umm question is why does this petcock do that? :rolleyes:

[timex69]

your gonna have to be a little more clear i think but do you mean you turn the petcock on then when you ride it for a bit it vibrates to the off position..if this is what you mean here is what you do:

drain the fuel from the tank and remove all the nuts/bots holding thetank to the frame then take off the fuel line. Remove the bolt Holding the cover of the petcock on and put a new O ring in their to give it more resistance to turn. All it is, is the vibration turning it so just replace the oring inside the petcock.

[compaqkoci]

nope sorry i didn't explain it but i can have it in the off position and it will still run beautifully :D :-D

[84250r]

Probably still fuel in the bowl. It will stall after time for not having a constant flow of fuel.

[compaqkoci]

i dont think it could run 20 mins on just the fuel bowl :D

[whiteman350x]

Your valve is leaking through when it is in the off position. My trx 250r and 1 of my atc 250r's do the same thing. On the atc the rubber part inside is torn, and lets fuel seep by. Have not took the one in the trx apart yet.

[84250r]

i dont think it could run 20 mins on just the fuel bowl :D


Well its not magic if thas what your thinking. :D

[Lots_Of_Nothing]

I know my old air cooled R seemed like it ran forever when i had the valve turned off, but would die eventually., although in your case its most likely the gasket/rubber is old and worn out and letted fuel get by