Gas dripping from Carb

mstover

mstover

Member
I'm a Newbie who needs some help.
I turned on the gas valve under the tank inside the cab and within a few seconds, gasoline was dripping (almost streaming) from the carborator. It's a new carborator that I just installed about a month ago. What could be wrong and where should I start?
I appreciate your help!
- Mike
 
Hope it is just a stuck float. If it is a Zenith, just drop the bottom and make sure the float isn't hanging up. If it is a Brand New Reproduction Zenith, then use the search feature on Ford Barn. Lots of discussions on them as far as issues. Let us know what the carb is if you still have issues. Tilly or Zenith or whatever...
 
It's a newer Zenith. A stuck float was the first thing to come to mind, but I have no idea how to un-stick the float.
 
A long time ago one of my Zeniths developed a serious leak. It turned out that one of the jets had come loose and got sucked into the intake manifold. I bought the proper wrench to reinstall it.
 
You could 'tap' the carburetor with a screwdriver handle lightly to see if that helps.. There may be some 'crap' [technical term] under the float needle and removing the drain plug and allowing some fuel to flow through it could help.. It could also be the float needle itself.. I prefer the Grose style valve..
 
Try tapping it first in the area of the seat. If that does not do it, open it up and check the float to see if it moves easily or if its got gasoline in it. If you push the float up gently the flow should stop, unless there is something on the seat. If the float is not filling with gas ( that is, sinking) and moves easily on the hinge pin to the needle, and the needle shuts off the flow correctly, check that the float valve gasket and the main jet gaskets are snug.
 
I had the same problem and it was very frustrating because when I lifted by hand the float it would seal off the valve completely as designed. It would also hold a vacuum when released so I knew the valve was good. I tried everything I could think of and had the carb off 3 times to work on it. Then I noticed that the float was very sensitive to any movement as when the fuel level was normalized, I could move it up by hand just an almost imperceptible amount. This was enough to allow fuel to seep through the valve. I lowered the float just enough to take this slack out and my problem was solved. This allowed the float to raise the float valve just enough more to affect a perfect seal.
 
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