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Old 02-18-2004, 11:57 PM
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Cleaning a carb

My brother just picked up a 1979 toronado for $250, its running a bit rough. Its going to get a full tune-up asap. I'm new to carbs, how does one usually clean out a carburetor? I think its a quadrajet. Any advice on how to get the carb into tiptop shape?

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Old 02-19-2004, 12:19 AM
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If you dont want to take the thing off, then just spray some carb cleaner down all the barrels and use some fuel injector cleaner in the gas.

Idle mixture is controlled by the top screw infront of the primaries. turn it clockwise to lean it out, turn it counter-clockwise to richen it. Usually its about 3, 1/2 turns out from bottom.

If you want to get your hands dirty then go out and buy a carb kit. Keep in mind that a quadrajet is not modular! Once inside the Q-jet you will see what I'm talking about. Unlike a holley alot of the plumbing is cast into the carb, this makes for a much simpiler design.

But the integrated design is tricky to put back together, you can easily break the TPS sensor, the pump, or the choke lever if your not careful as they all stick out when you put the top plate back on.
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Old 02-19-2004, 04:23 AM
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Pick up a gallon or 2 of carb cleaner with your kit, soak your parts in it for an hour or 2 after disassembly, remove all rubber parts they'll be ruined, rinse with water and blow out all passages w/ air! Good Luck! Also, save the carb cleaner, it will work for future use!
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Old 02-19-2004, 04:58 AM
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If you are not familiar with carbs, I would advise you leave the Quadrajet alone. That is not the carb to rebuild if you have not done one before.

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