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Old Oct 27, 2003 | 06:00 PM
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boogity24's Avatar
boogity24
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From: Oceanway
Question Carburetor Question

I have a question about a motorcraft 2bbl. carb. which side is air and which side is gas? I cant find anything online but my dad caint figure it out, so i would be highly appreciative if yall could clue me in.
 
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Old Oct 27, 2003 | 06:05 PM
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From: central Alberta
How about clueing us in on what you're talking about What exactly do you mean about the air and gas? What's it mounted on?

mike
 
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Old Oct 27, 2003 | 06:13 PM
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boogity24
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From: Oceanway
the gas and air mixture. one is on the left, one is on the right. its mounted on a 390.
 
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Old Oct 27, 2003 | 07:40 PM
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Sir,

No disrespect intended but are you joking about the 2 barrel carb being one side for air and the other for fuel?

Anyway, both sides of the carb provide the engine with an air/fuel mixture. The air flow thru the "barrels" creates a vacuum that draws fuel from the bowl and mixes it as it heads to the manifold.

Take care,
 
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Old Oct 27, 2003 | 07:42 PM
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and both mixture screws are idle fuel. they should be an even number of turns out. Tune for highest vacuum.
 
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Old Oct 28, 2003 | 06:14 PM
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From: central Alberta
Robert's right- these are the idle mixture screws, one for each barrel. These control the air/fuel mix at idle with the throttle closed. Turn them both in until they gently seat. I usually back them out 1 1/2- 2 1/2 turns and do my final adjusting from there. you can hook up a vacuum gauge and adjust them or just turn them until it runs smooth.

mike
 
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