Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

Venturi's in action in idle

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Marx3:
I did not pull them, but i made sure I could blow air through them. I will re-check them and make sure! I must admit that I also tried the carb on a SBC and started it up real quick without a fuel filter. Foolish of me, should have known better. It flooded instantly, so theoretically there could be some new dirt in the tubes. I will check up and report back!

Marx3:
Hmm, turned out it was dirt in the left idletube. or down restriction. Non the less, poking a thin piece of wire through them helped open up the effect on the left mixturescrews and Wham! The Nailhead came to proper life!
Just recieved your book Cliff. Officially my new bible. Thanks!

Cliff Ruggles:
We pull the idle tubes on any level of carb build here, always have.  Most shops simply "rod" them out, but there will often be considerable dirt/debri under them, since the area below them is not accessable.  Sooner or later they will get plugged up, seen this happen way too many times. 

Our HP kits come with new idle tubes, so have no fear if you mess them up some pulling them out.....Cliff

Marx3:
How do you pull them up? or is that an industrial secret ;-)

So when I order my kit for the next rebuild, you can determine which tubes I need based on the carb-number?
btw, when I need a kit, where do I go? Do I fill out the form on the homepage?

Cliff Ruggles:
We can pre-drill the idle tubes if requested.

The information to pull them is in the book.

Contact us directly for parts, cliffshp@embarqmail.com, 740-397-2921...thanks...Cliff

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