Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

throttle plate v.tubes filled

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Kenth:
The outer tubes in air horn are parts of the secondary initial POE system using their own fuel wells in bowl and has nothing to do with the secondary main discharge nozzles.

F250 Restorer:
Thanks for taking the time to lead me through this.

The inner supply tubes on my carb go directly to the top of the airhorn. No fuel can escape them into the discharge tubes. How can I pull/tab them down a bit so that they can supply fuel to the discharge tubes?

Kenth:
The inner tubes are sitting fine and supply air into the fuel and the emulsified fuel feeds thru the nozzles.
Click on the picture to enlarge and see better.

F250 Restorer:
We have a disconnect. I understand your explanation, but I don't think you are following what I am trying to say or explain. My secondary supply tubes are solid and extend to the top of the airhorn. There is NO way for the fuel to mix with air, unless it spews out over the top of the carb and is then sucked back down the secondaries. My understanding, as in your photo, is that the tubes have to terminate somewhere within the circumference of the discharge tubes so that the fuel can mix with air before being sucked down. Mine do not.

CLIFF, can you please tell me how to rectify this?

Kenth:
The small brass tubes extend to the top of the air horn and adds air into the fuel in the fuel supply channels, not fuel to the nozzles.
The fuel to the secondary main nozzles are delivered up thru the fuel supply channels cast into the float bowl.

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