I bought an 82 650sc last year and drove it for a while before I noticed the leak (small at first) became very large. Took it to the shop and they said the automatic valve had gone and he ran the fuel straight from the tank to the carbs. It still leaked after that and didnt really solve any of the problems (poor power above 80Km/H) so this winter I took it apart and put in new needles and rings. I also bought another fuel valve and petcock (old petcock was toast and the mechanic not only ran the hose straight, he took the original valve), however the new (to me) valve doesnt work well either (poor spring I think) and the carbs still leak. Correction, there is a fuel leak but its possible it is happening because the float bowls are filling and overflowing. I see things that say change the o ring in the float needle, but I dont have any. I guess after all that, my question is does the 82 have o rings or gaskets that seal the needle/fuel once the floats are raised? The needles that came with the kit look exactly the same as the old ones so now Im confused as to why they just keep filling with fuel.
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