- Motorcraft 2150 2 Barrel Carburetor Troubleshooting
- Accelerator Pump Diaphragms
- Changing Fast Idle Lever
- High Altitude Compensator
- Solenoid Idle Speed Adjustment
- 2150 Choke Circuit
- 2150 Float Circuit
- 2150 Power Valve
- 2150 Carburetor Diagram
- Motorcraft 2150 Carburetor Tuning Guide – Main Metering & Variable Air Bleeds Explained
- 2150 Mechanical Power Valve Actuator
Motorcraft 2150, 2 Barrel Carburetor Technical Help
2150 Venturi Sizes
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1.08 inches: This is one of the more standard sizes, often found on 302 cubic inch engines. It corresponds to a flow of approximately 287 CFM.
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1.21 inches: This size is less common than the 1.08-inch venturi and is usually found on larger engines, translating to a flow of about 351 CFM.
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1.23 inches: Another variant used on some models, corresponding to a slightly higher CFM than the 1.21-inch version.
Both screws should be the same length. Motorcraft didn't use 2 different sized screws in any carburetor. If the screws go in at different depths in order to get the idle to smooth out and there is more than 1/2 turn difference, then there is something wrong on one side of the carburetor.
Update - Solution to this problem was dirt. Cleaned out and all was well.
2100, 2150 Differences
Watch a video about the differences:
2150 Venturi Size
- Test for excessive throttle shaft play by moving the shaft back & forth. Any more than 1/32" and your carburetor should be re-bushed. This should be left to a professional. We have a couple of resources for this. Too much free play will create a vacuum leak along with a rough idle.
- Use a float spring on the float. This will take the bounce out of the float on rough roads.
- The FL21 Nitrophyl float should weigh 9.5 grams.
- When converting from a hot air choke to an electric choke, block off the hot air tube air intake.
