Faulty Fuel Petcock?

[Raulmanny50]

My 1981 GS650G, w/ about 32k, since I got it (March last year) the fuel petcock was very hard to turn (reserve, prime). Today after replacing the rubber boots to the carburetors and installing the air filters I put it in the prime position, after turning the starter I notice a torrent of gas leaking from the 1st left carburetor. I assume that MAYBE some gaskets/seals/diaphragms is/are gone. It is time to replace the petcock? Your help is appreciated! By the way I was not able to start the engine but I had a fire extinguisher by my side.

RAF

You will never have too many motorcycles
like you will never have too many girlfriends....

[tom203]

Where exactly is this "torrent of gas" coming from- petcock or #1 carb? Are you sure your fuel line isn't busted/cracked?

[Raulmanny50]

Faulty Fuel Petcock?

Tom203, the leak (torrent) is thru the 1st left carburetor, I assume (sorry) that somehow the fuel petcock is acting like in prime position (no restrictions) all the time.

RAF

[tom203]

The petcock feeds fuel to between carbs 2 and 3 -is fuel is flowing out of carb 1 ? or out of connection between 1 and 2 ? Did you have the carbs seperated recently? Anyway, IF carb #1 is overflowing then float needle valve is not shutting off (sticking or worn) - in "Prime" spot, there's constant pressure on float needle valves, so bad ones leak, but usually not in a torrent!