Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

Runs great, unless it's less than 50 deg. outside.

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Cliff Ruggles:
I would use recipe #3 from the book, but would reduce the bypass air to around .100", and the idle down channel to .055"......Cliff

jxu109:
I took the top off last night, it has either 76 or 78 jets in it, with 41 (or maybe a K???) rods in it.

Should I really mess with this one, or is there a much better carb out there for me to deal with?

Thanks for all your help.

jxu109:
I think I'm going to get a different model. . . if this one isn't ideal, I would rather start with something better. 

Is it best for me to find one, and send it to you?  Or do you have a bunch that you could sell?



Thanks for all your help.

Cliff Ruggles:
Those carbs are fine, they just need some help.  I would recomend installing 4 of our screw in main airbleeds into the main body and airhorn, then new jets and metering rods.  I've never been happy with any of those large main airbleed models.  They just have way too much emulsion air and it's difficult to get enough jet in them, and small enough metering rods for a good fuel curve clear across the engine speed/load range.....Cliff

jxu109:
Last night after re-reading the page on big main air bleeds, I started filling with aluminum...  the main bleeds are filled, and it looks pretty good.

Then I moved on to fill in the ones in the air horn, and ended up massaging things a little too hard.  I need to go get a new air horn today ....

Wish I would have known about the screw in style earlier :D

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