Quadrajet Problem Solving > Dialing in your rebuilt Quadrajet carburetor

Poor Fuel Mileage on 4.3 V6 with Quadrajet 17056250

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don3194:
So you guys may think I'm crazy for doing what I did, but its done and I'm having some problems with fuel economy. Basically the poorly designed fuel injection on my 1994 Oldsmobile Bravada failed so I found a manifold and installed this quadrajet I had lying around. I just used the walker rebuild kit from oreilly's to replace gaskets. So anyways my 4.3 quadrajet combo is getting only around 9 mpg in the city and 13 on the highway. I honestly believe I should be getting higher fuel economy, and my guess is that its dumping too much fuel for some reason. I also dont know if this quadrajet was from the 350 or 454 but from what I found it was off a 76' olds.

Cliff Ruggles:
What are you using for a distributor?

don3194:
I'm still using the stock distributor that came with the vehicle.

Cliff Ruggles:
Not sure what they used for a distributor but it would need a distributor that has mechanical and vacuum advance to work correctly if you have converted it to a carburetor from a TB or Fuel Injection system.....

don3194:
Okay. Well, I know it is a computer controlled distributor so it doesn't have vaccuum or mechanical advance. As far as I can tell it is advancing, but maybe not enough or too much.

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