ReMan Quadrajet running rich

[Yesca 71]

I Just bought a reman quadrajet from Autozone and installed it yesterday. Running very rich. Alot of smoke and burning my eyes in the shop lol. I remember something about turning the adj screws all the way in and back out 1 1/2 turns. That still true???

[cableguy0]

If its smoking and running that rich the adjustment screws arent going to help you. More than likely the floats need adjustment. I dont trust the parts store reman carbs as far as I can throw them. They usually seem to be worse than the one you take off to replace it with. That is the baseline adjustment for the idle mixture screws. You basically need to turn the screws until highest idle is achieved. Turn the idle back down with the idle adjustment screw and repeat the procedure with both screws until it no longer raises the idle.

[Yesca 71]

Thanks Cableguy ill give it a shot.

[GASoline71]

Like was mentioned above... even thpough it's been remanufacured, you might need to take the top off and check the float levels yourself. Check for junk in the float bowl that could have gotten into the needle and seat area too.

Gary

[Wrenchbender Ret]

More then half the parts stores "reman" carbs are not right. Shut the engine off & look down the throat. If gas is running in you have dirt in the needle & seat like 71 says or something wrong with the float. I woujdn't take it apart as it might void the warranty. If you know how to work on it yourself you wouldn't have bought a reman. This advise may be to late for you, but never turn in your old part till you are satisfied with the replacement. Often it is better to have your part rebuilt then exchange it for a "reman".

[storm9c1]

It's hard to adjust the idle mixture screws by ear (listening to RPM). I'd use a vacuum gauge connected to full manifold vacuum and adjust the screws to get the highest vacuum reading at idle. Adjust slowly to let the engine smooth out.

[classicgm]

Take it back. Mass rebuilders are only known for butchering the q-jet. Your best bet is to source a quality rebuild from an online vendor who has the tools and care to do it right.

FWIW I tried the AZ reman carbs several years back and gave up after the fourth one. Now I rebuild them myself but I don't do it for anyone else unless I have the vehicle to play with.

Good luck!
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[C-10 simplex]

Unfortunately, i would have to agree. And i'm not that good at carbs; Autoparts store reman carbs are atrocities.

You might be better off getting one from a salvage yard off a similar or ballpark application.

Or a reputable rebuilder like SMI.

[mud.man.rj]

First off before you take it back make sure your choke is opening or it will run very rich, if it is electric make sure it is conected to a 12v power supply and power with key on, if not opening with power to it may have to adjust it, but I would take it back if choke wire is good or choke is working properly, why waste your time, especially if not great with carbs.

[classicgm]

There is seriously a snowball's chance in hell that it's a good carb. You'll do better with a never been rebuild carb from the junkyard and a rebuild kit.

When it comes to rebuilding quadrajets, I don't know how that industry survives.
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[Arkansas Trey]

I recently rebuilt my quadrajet, wasnt nearly as complicated as i thought .
It does run a little too rich now , i purchased a vacume gauge and fiddled with adjusment screws , but it looks like im gonna have go back in and adjust float height .

[geezer#99]

Float might be fine!
Could be your ‘richness’ is because you’re idling on the power circuit.

[Arkansas Trey]

How would i go about checking that ?

[geezer#99]

Pull the carb off and check the idle transfer slot.
It should be square. Some info here about that. It’s referring to a Holley carb but quadrajet is the same.

http://www.crankshaftcoalition.com/w...EI_distributor

[Arkansas Trey]

Thanks for the link , definitely something to check next time im in there, it did mention " off idel responce" and mine seems to do pretty good there , maybe a slight studder , but never tries to die, and will idel good, even when cold with choke on.
How do y'all guys actually know when one is running a little rich , i read somewhere thatyou can smell the excess gas in exhaust fumes (which i think i can) but when the previous owner stopped by to see my progress , he was all smiles and thought it was running pretty good , and said he smelled maybe a little richness.
Before i go and start "fixing something that aint broken"
Do you know where i can find info on how to know for sure that it is running rich afterall ?
And not just overthinking things .

[geezer#99]

Check the color of your plugs.
Sometimes if you adjust either mix screw all the way in and the motor tries to quit then you could be idling on the power circuit.
Adjust them slowly. A 1/4 turn at a time.