I bought a "project" fl250 with the Engine in pieces in a box. Got it together with a new piston, rings, etc.. It came with 2 Keihin carbs also in the box. I took them apart and cleaned them up. I can get it started (with starter fluid) but it wont idle. I have to constantly gas it. With the choke on, it runs at a very high RPM. Usually pulling the choke on would kill the Engine. While im gassing it, ive tried adjusting the throttle stop screw all the way in and all the way out. It dosent do anything. This is the same situation for both carbs. Could both carbs have the same problem? Throttle cable adjustment? Air leak? Im about ready to buy a new carb. Any ideas would help.

Sounds like it is not getting enough fuel, tank all rusted, how is filter and lines,
float adjusted properly?

You try the other carb?



Oldmanody had problems with his stock carb this was the fix.

http://pilotodyssey.com/PO/viewtopic.php?t=909

check the fuel filter, and if its bad, replace it with a clear one so you can see the fuel going in
fuel pump?