Question about Idle mixture screws
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Member
Joined: Dec 2005
Posts: 201
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From: Ontario ,NY
Car: 1992 Z28
Engine: 350 tpi
Transmission: 4L60
Axle/Gears: 3.23
Question about Idle mixture screws
I was wondering how the Idle mixture screws work when you turn them in and out. What happens when you turn them out? Does it richen the mixture or lean it?
Senior Member
Joined: Feb 2005
Posts: 669
Likes: 1
From: Atlanta, GA
Car: 1982 - Z28
Engine: 350 / CCC Q-Jet
Transmission: THM-700R4
Axle/Gears: 10 Bolt - 3.73
berlincam86,
CCW (Out) Richens, CW (In) Leans.....
If your car has a CCC (Computer Command Control) Rochester you really don't want to mess with those screws unless you are following the complete and proper adjustment procedure. Haynes published a very good book that is a great starting point for anyone that wants to adjust a Rochester. AutoZone has it for about $15. Adjusting those screws without following the proper procedure is asking for trouble
Haynes - Techbook - Rochester Carburetor Manual #10230
IMPO - Get the book, read it, read it, read it THOROUGHLY, and THEN go for it!
Sincerely,
Kurt
CCW (Out) Richens, CW (In) Leans.....
If your car has a CCC (Computer Command Control) Rochester you really don't want to mess with those screws unless you are following the complete and proper adjustment procedure. Haynes published a very good book that is a great starting point for anyone that wants to adjust a Rochester. AutoZone has it for about $15. Adjusting those screws without following the proper procedure is asking for trouble
Haynes - Techbook - Rochester Carburetor Manual #10230
IMPO - Get the book, read it, read it, read it THOROUGHLY, and THEN go for it!
Sincerely,
Kurt
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theshackle
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