How To Rebuild a Leaking Motorcycle/ATV Fuel Petcock Valve 

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What did u do ? Bought a new one and it stated leaking immediately

lol the cockpit.

Thanks! The GT85 spray should work just fine.

Sounds like you just have a low fuel level. The “reserve” doesn’t actually tap a reserve tank. It just takes fuel from a lower point in the tank. If you run out of fuel for the On position you switch to Reserve and keep going.

Did you find out what was the problem?

I have the exact same issue with my 91 warrior that I just recently picked up, eager to get it back in shape so let me know if you found a way to resolve this issue...

@@berenschulbeck9718 Thanks, I am still trying to figure out a way. I was thinking of if it would be possible to block one or more of the holes and just keep one for the flow of fuel and hopefully at least one of the other positions will be closing the flow, but I just don't know what material to use or how to plug the holes. I read somewhere on the net that if the cover plate is tightened too much it could put too much pressure on the gasket making it not work properly but I am not sure. If I could find a new gasket in rubber maybe that would work better. I'll post an update at here in case I get it to work, but maybe I'll be forced to get either a new petcock or make a solution by adding an ordinary on/off switch controller after the non functioning petcock by just cutting the hose between petcock and carb and installing a simple type on/off petcock in the same style as of those in lawnmowers. It wouldn't look good but at least it would be possible to stop the flow of the fuel. At least a temporary solution to get the bike running again, or if all else fails I could perhaps get some kind of vice grip that adds force to the hose and stops the flow after the petcock, just be careful to not press the hose too hard to create any injury to it.

@@berenschulbeck9718 I tried another method today by blocking the passage to the reserve tank with a half moon shaped piece of cork that I cut out, it actually stopped the flow throughout the petcock when adding just a little fuel, I did not however add much fuel enough for it to reach up to the normal tank stick, but in theory it might work. I didn't have enough fuel at home to try it but I'll see if I can get it done some other day. The downside to this was that there was some small debree in the fuel that seems to have broken off from the cork so it's not optimal, a rubber gasket would be better.

@@LUNARIAproject I installed a secondary on/off valve such as the one you described being on lawnmowers and it seems to work just fine, if that isn't as appealing as other alternatives I suppose you could just buy a new gasket that is linked on this video.

@@berenschulbeck9718 Good to hear! I ordered a new cheap petcock and will see if it will fit otherwise I'll get a lawnmower petcock too. Let's hope it will work. :)

You ruined it