General Category > Quadrajet Carb Talk and Tips

Repairing a main well plug leak

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Cadman-iac:
  Cliff,

 I used your method to test the well plugs on the 17057512 after having AFR issues that made no sense.  The plugs were leaking and I tried tapping the swagged edges to seal them before resorting to replacing them.  I have only had a few carburetors that had leaking well plugs, the last one was over 20 years ago and at that time the only way I knew of to fix it was that O-ringed plug kit from Napa.
 I couldn't find how you do it in your book, thus the question posted previously.
 
 I appreciate your knowledge on this and thank you for taking the time to read and respond to this. Your book is a great help to me, I wish I had found it sooner. I bought it from a bookstore for 25 bucks last century if memory serves.
 I have 2 other books on Quadrajets, one  that was published back when the CCC carbs were still being made in 1986 by Doug Roe, the other in '73 by him and Bill Fisher.  Neither of those went into the depth that yours does. And Doug's method of repairing the well plugs was to spread goo over them.
 That's why when I found out about the O-ring plugs back then I figured that was the best fix to date. I know that testing those using air pressure can't be done with the base removed, as it's the base that keeps them in place, so you don't really know if they leak unless you see fuel saturation in the pocket and on the gasket, or you pull them back out and look at the O-rings for cracking like i suspected was happening. Tapping and plugging is the best way for sure, and now that I know it's possible I'll be doing it this way from now on.

 Oh, and I agree, the Quadrajet is the best carburetor ever designed, or I wouldn't have been collecting and using them for the last 30 plus years. I made the mistake of running a Holley once, I quickly replaced it with a Q-Jet.

 Rick

Cliff Ruggles:
"I couldn't find how you do it in your book, thus the question posted previously"

Bottom plug leak testing and repair is covered at the beginning of Chapter 5 pages 71-72.

Cadman-iac:

--- Quote from: Cliff Ruggles on February 04, 2025, 03:26:26 AM ---"I couldn't find how you do it in your book, thus the question posted previously"

Bottom plug leak testing and repair is covered at the beginning of Chapter 5 pages 71-72.

--- End quote ---

 I see that now, just looked at the book. I had read that years ago but hadn't had a carburetor that needed the plugs replaced until just recently and I had forgotten about what you said and went with what I had done in the past. I won't make this mistake again, thanks.

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