Hello all,
Some of you help diagnos my car and the spring is bad on the secondary side of the carb. Car is 84 lesabre ccc 307olds.

Question is, what is best way to put a new spring in?

It looks to me like I have to pull the whole carb assembly

Thanks for any help

 

Air horn [lid] has to come off, at least.

beware that the spring grips the shaft by passing thru it, I mangled one trying to remove it w/o a clue.

upper air valve plates have to come off, to get the shaft out, involving grinding away the deformed parts of the screws, putting in new binding head screws when done, upsetting the metal so they can't fall into the engine.... Fairly involved process.

 

You'd be better off getting a rebuilt carb, for a lot of different reasons, or at least a good used one.
I went through 4 in a'86 305 sbc 220k mi. - primary throttle shaft leaks vacuum when they wear, in about 50k.

 

Is an advanced auto one worth buying. Where would be a good opion to get a rebuilt or new carb?
Thanks

 

also can i zip tie the secondaries shut and drive the car under 45mph? or is this not recommend?

Sorry for my ignorance on the subject

 

replacing the air valve wrap spring is not that hard, just loosen the set screw and remove the adjuster pin. you will have to remove the carb for this job, but that's all. the harder part will be finding the spring as the kit that it came in was long ago discontinued. the spring hooks onto a pin in the air valve shaft. you do not have to remove any other parts on the air horn assembly. now if you were talking about the secondary air valve cam, that's a whole different ballgame.


bill

 

The spring that i am looking to replace that i bought three of just incase they break, is where the adjustments are made on the secondary side of the carb. the one by the adjustment screw

 

i think that at this time, a pic or two would be in order so we can be sure we're on the same wavelength.


bill

 

Full Explanation Click Here.

This might be helpful to a degree, just to help you understand better the parts of a qjet.

 

It's the spring that keeps tension on the secondary flap

 

the air valve wrap spring.


bill

 

are you talking about the screw with a spring wrapped around it on the choke pull off? passenger side of carb....