Hey there, Bob.
I can't believe that no one more experienced than me has responded yet. Well, I don't know your carb exactly so I will be speaking in general terms. Yes, it does sound like you have either a gas-logged float or a clinkier in the valve seat which the floating valve regulates.
Either way you are going to have to turn off the gas to the carb. Crack the gas valve back on just a bit. Now, see if the gas flow stops as you simulate the gas pushing up on the float. If you can't stop it, it's a good indicator that there is an obstruction in the orifice. Next, remove the carb bowl cup and the gasket. Carefully remove the pivot pin from the arm of the float being careful not to lose it or the needle valve as you lower the float. This is a good place to have a thick towel just under your hands so that it will catch anything that drops.
Now, shake the float to see if you can hear anything inside. Even if you can't you need to feel if the float is heavier than it should be. You can? It is? Replace that saturated thing. Inspect the valve for rust or burrs. If any, replace it too.
If the float is OK you are going to have to disconnect the fuel line from the carb (this is a good opportunity to do some preventative maintenance and replace the hose). Now, try to see if there is anything in the orifice. Inspect the seat while you are looking. Even if you don't see anything use some compressed air via compressor or can and blow from the direction of fuel flow to dislodge any obstruction. I don't like to use anything harder than a broom straw to feed through the orifice to dislodge anything (same direction as you blew it out).
Now, reassemble it without the bowl, open the gas line and retest the needle valve. If it doesn't seal, redo everything! Before putting the bowl back on you should replace the gasket too.
Hopefully someone will pipe in if they see that I have any part of it fouled up!
Later,
Chiz
Linear Mode
