Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

Some idle issues with a 7041263

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Toronado:
Sounds like you got a BAD unit and the seller
is full of it, why not avoid future problems &
by a rebuild kit and book from Cliff it
is only correct way to fix the problems since
there are several problems. Or send
it to Cliff if you have time to wait for rebuild by a pro. Allso sounds
like the power piston is the main cause of the problems.

Cliff Ruggles:
Our HP rebuild kits come with new idle tubes, and the plastic collar for the power piston, as well as everything else required for a complete/correct rebuild.....Cliff

Ncal71formula:
Just an update here,

I bought a rebuild kit and some idle tubes from Cliff, and rebuilt the carb. I'm getting higher vacuum now and the idle screws are both about 3.5 to 3.75 turns out and much more responsive. The idle is also a bit smoother and it's not running as rich as before.

However, the airhorn gasket is still wet with gas like before but worse, it's actually dripping down the side of the carb! (to be exact, it's around the front of the carb under the bowl vent and extends to about halfway around the drivers side). I noticed that my airhorn is warped a bit and strangely enough, the gasket that was on the carb before is thicker than Cliff's gasket from the kit. I guess the seller knew about the warped airhorn already and thought a thicker gasket would help. 

So, is there anything other than a warped airhorn that would cause gas to leak out this way?

Cliff Ruggles:
We have gaskets that are .015" and .030" thicker than the stock gaskets for that carburetor number.

I would recomend to flatten the front of the airhorn slightly with a belt sander and go to a thicker gasket. 

This will make sure it seals up effectively between the two parts......Cliff

Ncal71formula:
Ok, I'll try to sand it down a bit. Would it be ok to just use two gaskets? The gasket that was on there before seems to be in good shape.

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