Re: Carburator gas leak problems

Posted by Mke Flanagan on November 15, 1997 at 23:29:01

In Reply to: Carburator gas leak problems
posted by Dave Grove on November 15, 1997 at 22:44:54

Your problem may be the float setting is allowing the float bowl level to become excessively high. This can cause gasoline to flow out the top of the main jet, into the throat of the carb and out onto Mother Earth. To fine tune the float adjustment you need to build or buy a sight gauge (Snyder's PN A-9599; $3.50). I'm the kind that usually builds whatever aids I need but for 4 bucks.... If the float adjustment is, let's say, only silghtly above the top of the main jet the gas would barely ooze out causing the drip you describe. Quien sabe'?
The Model A Fool.
: I have a '28 A Sport Coupe with a leaking Zenith Carb.To try to stop the leak I have done the following:
: 1. Rebuilt the carb. with a carb kit including a new Grosejet
: float valve, jets, and gaskets.
: 2. Rebuilt the fuel shut-off valve by reseating the cone with valve grinding compound, cleaning, and a new packing gasket.
: Gas leaks even if the shut-off valve is closed.It seems to come from a weep hole in the bottom of the carb. near the choke plate.It does not come from the overflow hole in the fuel bowl.Could it be related to float adjustment or height of the main jet & jet cap within the venturi?Should I try a different type of float valve?Any suggestions will be appreciated!

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