by rlh » Sun Apr 15, 2018 4:58 pm
My crf150f developed a fuel leak recently. I turn on the fuel petcock, start the engine and gas starts flowing under the bike from the overflow. I put some seafoam in the tank to see if that would help. Next I ordered a carb rebuild kit and replace everything. I kept my main and pilot jets because they were not stock. Still leaking. I removed the carburetor again took off the float bowl and checked the float height. It was actually a little low so I decreased the distance from the float to the carb surface. When I was putting the bowl back on I noticed that the float was hung in the down position. Yea, I found the problem! Unfortunately, I'm not sure what the problem is. The float seems to be hanging when the float moves down, the float valve moves out and jams in the seat. The pin is closer to the edge of the adjustment tab on the float. If I tap the wire hanger, the valve falls back into the seat. I tried to bend the end of the adjustment tab up so that the wire hanger would not move out from the center position over the seat. That did not fix the problem. Is there a problem with my float or is this a problem with the seat? It doesn't appear that the seat can be removed, at least not easily. Any thoughts?