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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jun 2011 Posts: 420 Shop Shark | | Shop Shark Joined: Jun 2011 Posts: 420 | can anybody give me a round about number of turns to turn my mixture screws on my carter w-1 on my 46 1/2 ton with an original 216 in it?? | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | | | | | | Joined: Jun 2011 Posts: 420 Shop Shark | | Shop Shark Joined: Jun 2011 Posts: 420 | mine has 2 mixture screws on it, 1 on the motor side and 1 on the fender side? | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | read the link Tim provided, you have one idle mixture screw and one idle speed screw
Bill | | | | | Joined: Jun 2011 Posts: 420 Shop Shark | | Shop Shark Joined: Jun 2011 Posts: 420 | its a carter....i believe the adjustment screw on the back side of the carb is for the accelerator pump?
| | | | | Joined: Jun 2011 Posts: 420 Shop Shark | | Shop Shark Joined: Jun 2011 Posts: 420 | its a carter....i believe the adjustment screw on the back side of the carb is for the accelerator pump?
| | | | | Joined: Nov 2002 Posts: 2,763 Carburetion specialist | | Carburetion specialist Joined: Nov 2002 Posts: 2,763 | On a Carter W-1, the brass screw with the blunt point is the mixture screw......out approximately 1 full turn front lightly seated. The other screw is the throttle positioner screw a.k.a. curb idle screw, and rotates the opening of the throttle plate. After the engine is up to normal operating temperature, adjust this screw to adjust engine idle RPM. Clockwise will increase RPM, counterclockwise will decrease RPM.
Jon.
Good carburetion is fuelish hot airThe most expensive carburetor is the wrong one you attempt to modify. If you truly believe "one size fits all," try walking a mile in your spouse's shoes!The Carburetor Shop | | |
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