Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem
Choke
PMD1969:
--- Quote from: Shark Racer on November 27, 2012, 07:02:04 PM ---I meant no disrespect when I said it was simple - that was in reference to the on-carb choke. In the case of the divorced choke... I'm clueless. :)
--- End quote ---
LOL No worries. I just need Cliff to chime in and help me solve this terrible problem. My mother is coming to visit and this car needs to be running better when she gets here. No pressure lol.
Cliff Ruggles:
The divorced choke simply pushes the choke linkage up to close the flap when the engine is cold. When the coil heats up, it pulls down on the choke linkage and allows the flap to open. There is some adjustment by bending the link between the divorced choke and the carburetor.
The picture shows a pretty steep angle between the choke coil and the carburetor, in most cases the choke is directly under the carb. Could be binding up when applied. I'd check choke function with the link unhooked, then verify it can move it's full range of motion with the link hooked up.
Also verify that the coil is working in the right direction cold and when it's heated up. Also a bit old school, and some bending of parts is required for adjustments, those types of chokes work flawlessly when correctly adjusted....Cliff
PMD1969:
--- Quote from: Cliff Ruggles on November 28, 2012, 04:41:19 AM ---The divorced choke simply pushes the choke linkage up to close the flap when the engine is cold. When the coil heats up, it pulls down on the choke linkage and allows the flap to open. There is some adjustment by bending the link between the divorced choke and the carburetor.
The picture shows a pretty steep angle between the choke coil and the carburetor, in most cases the choke is directly under the carb. Could be binding up when applied. I'd check choke function with the link unhooked, then verify it can move it's full range of motion with the link hooked up.
Also verify that the coil is working in the right direction cold and when it's heated up. Also a bit old school, and some bending of parts is required for adjustments, those types of chokes work flawlessly when correctly adjusted....Cliff
--- End quote ---
Thanks for the reply.
The divorce stat is working and in the place where the factory installed it. The problem seems to be that the carb needs AIR since when I take the flap off it starts much better. Again the problem then is that the secondaries won't open. I am not sure if there is an adjustment that I can make to get more air to the carb overall that will help and need I can install the flap and get the secondaries working.
Shark Racer:
Have you tested your choke pull off to be functional? The choke pull-off should open the choke as the engine turns over as it applies vacuum and pulls the flaps open a bit. There is an adjustment on the pull-off if it is tested to be functional.
Start by applying a vacuum to the pull off - it should hold vacuum and the pull-off will retract and open the choke flap when the engine is cold.
Shark Racer:
By cold, I mean the choke is cold (and set) and the engine is off.
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