General Category > Quadrajet Carb Talk and Tips

Removing Idle Tubes

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brown7373:
I am having no luck removing idle tubes.  I have followed the procedure in your book, Cliff, and am getting nowhere.  The tubes are off the collar, but the collars won't budge.  Drywall screws have failed, and heating the area with a torch has also not let me get them out.  Any other ideas?  I have considered a drill bit, but I don't know.

429bbf:
im not the carb god. but I've taken out a number of idle tubes. does your screw seam to be slipping when you go to pull it out?grind the first couple of threads off the screw so it can get a better bite. if that doesn't work get the right sized punch that just a few thousandths smaller than the collar and drive the collar down just a smidge. to loosen it in the bore . then twist your screw in with a little heat on the carb and they should come right out.fwiw

von:
In addition to the above mentioned tips I always heat the area just below the top of the idle tubes for 30 seconds with a small  butane torch, then put some pieces of masonite under my sidecuts for a fulcrum when prying up on the drywall screw. I've not had much luck getting them out without the heat. When driving the tubes down with a punch if the collar moves down too, drill the unit with a 3/32" drill bit about 1/4" deep to get a bite with the drywall screw. I always install new tubes since the old ones always get destroyed getting them out.

Bigal442:
Great tip on moving the idle tube collars down a touch before extracting upward. I too have been struggling a bit with removal. Finally got one side out. The second side took a weird turn. The collar came out but the idle tube itself stayed in. I thought it would dump out just by turning the carb upside down. Not only did it not fall out, but I cant get it out. Why would the tube stick? I thought the tube just hung by the collar. I'm thinking I may have to use a tiny screw (I.e. Eye glass size) to go inside the idle tube to pry it up. Any ideas of what is going on?

Next problem is that one of the "idle down tubes" (next to the idle tubes) is missing! One side clearly has a down tube brass restriction while the other side does not. Are these available and are they just pressed in the the idle tubes? I have a picture but don't know how to post it.

Thank you.

429bbf:
you may have tapped the tube down to far and now it is wedged ill bet when you get it out it my be bent.you can only go down very little that is why you don't have much room to gray the collar. your little screw should work. yes cliff sells the little inserts i think he also has screw in inserts you have to tap your carb. hth

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