General Category > Quadrajet Carb Talk and Tips
Idle tuning
55 Tony:
Finally got what I needed out of the book! Enlarged the idle tubes just a little and the holes for the idle adjusting screws and now it idles strong and the A/F gauge hovers from 14.4 to 15.2. I had to back off the idle rpm adjustment and I was able to loosen up the electric choke so it cuts out sooner. Also opened up the secondary supply holes because it was "running out of fuel" when getting on it good. I had done that trick on my previous q-jet also so I knew that would work.
Frank400:
--- Quote from: 55 Tony on September 03, 2017, 04:13:58 PM ---Also opened up the secondary supply holes because it was "running out of fuel" when getting on it good. I had done that trick on my previous q-jet also so I knew that would work.
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can you elaborate on this ?
55 Tony:
--- Quote from: Frank400 on September 04, 2017, 03:55:19 AM --- can you elaborate on this ?
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Sorry for the delay, I've been a busy guy lately. If you have Cliffs book, it's on page 81. I had done mine long before reading about it and generally go larger. I've had no negative affects that I know of from drilling them too large. Maybe Cliff will fill me in on that.
Frank400:
thanks for the answer. And what size did you drill them ?
55 Tony:
--- Quote from: Frank400 on September 18, 2017, 09:36:45 AM ---thanks for the answer. And what size did you drill them ?
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I believe 1/8".
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