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Old 09-10-2002, 08:17 PM
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Post Help with carb

Hey everyone. I just wondered if you turn the air/fuel mixture screw to the left or right on a carb in a 2.3 74 mustang II... It kinda smells like its not burning all the gas..like its almost fludin itself..ive tinkered with it some, but i think ive made it worse now...
Note: Im just in need of a quick fix. Just another month before i put a 302 boss in it

oops, its a 2 barrel
thanks
Fairlane

[ September 10, 2002: Message edited by: 59Fairlane ]</p>

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Old 09-10-2002, 08:34 PM
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After reading the last post on carb help I think maybe you should just park it untill you put the Boss in it.
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Old 09-10-2002, 08:52 PM
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Gotta have somethin to drive
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Old 09-10-2002, 09:02 PM
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Ya I know I was just kidding. Hang in there awhile . There is a lot of guys on here that can help you.
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Old 09-10-2002, 09:06 PM
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Yeah, my friend told me how to do it over the phone...start it up, turn the screw out 2 1/2 turns, then try throtle response...keep turning out 1/2 a turn till you have good response, and it dont shake...well, after i did this, i lost about 25 mph top speed...which, is a lot...and it seems to use a lot of gas, and smells flooded...

fairlane <img src="confused.gif" border="0">
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Old 09-11-2002, 03:16 AM
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Ah...The old 2V Weber...

Start by turning the mixture screws out 2 1/2 turns. Start the engine and once the choke is fully open and the idle has stabilized, turn in and/or out slowly until you find the best idle quality. Adjust curb idle speed.

Then take the throttle shaft (exterior at linkage boss) and try to shake it up and down, forward and back. If there is a lot of movement, the throttle shaft bore/bushings is wallowed out and will affect idle quality and performance.

Shut it down and look into carb bore. If you see raw fuel puddling, you have an internal defect that will require at the least an overhaul kit.
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Old 09-11-2002, 06:16 AM
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I have adjusted my idle setting using a vacuum gauge. I would start at 2 1/2, which seems to be the norm for this carb, and turn each screw until you get a smooth idle with max vacuum. Then if it is still a little rough fine tune it with the screws until it is smooth.

The smell of gas is probably a bad carb. It is probably puddling in the carb. Also check for leaks outside the carb.
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