Choke Pull Off 1973 - 1978 Vega, Monza, Chevette, Pontiac, Gm 1975 - 1977 1 Bbl on 2040-parts.com
US $14.00
Location:
Duluth, Minnesota, United States
Condition:New
Brand:Tomco
Manufacturer Part Number:7397
UPC:Does Not Apply
Choke Pull off 1973 - 1978 Vega, Monza, Chevette, Pontiac, GM 1975 - 1977 1 bbl
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If your car is hard to start, the pull-off is probably at fault.
Replace your pull-off now as the rubber diaphragm will fail someday
Chevrolet
Chevette 1976 - 1978
Monza 1975 - 1976
Vega 1973 - 1975
Pontiac
Astre 1974 - 1977
Sunbird 1974 - 1976
What does a choke pull off do?
When the engine is first started, a very rich air/fuel mixture is required because cold fuel does not turn into a gas. The choke at the top of the carburetor provides the richer mixture by closing thus creating an area of low pressure inside the throat of the carburetor which helps to pull additional fuel through the main metering circuit. At idle there isn't enough air flowing through the carb float to pull fuel through the main discharge nozzle. The manifold vacuum rather than normal venturi vacuum helps to draw the extra fuel through the main metering circuit by temporarily choking off the air supply. When the choked engine is cranked, fuel is pulled into the engine through the idle port, the transfer port and also the main metering circuit. Combined with the reduced air supply, it creates the very rich mixture that's needed to start a cold engine.As soon as the engine starts, it needs air to keep running and to offset the very rich fuel mixture. This is why the choke pull-off is important as it is attached to the choke linkage where it pulls the choke plate open slightly as soon as the engine starts. If the choke pull-off is defective because of a vacuum leak or ruptured diaphragm, the engine may be hard to start or stall.
You can adjust the choke pull-off by bending the "U-shaped" pull-off linkage. Do not bend too much as, it may open the choke too far, allowing too much air which will cause the engine to stall.
CHEVROLET (23) 1973-1979 CAMARO (3) 1977-1979 1979 L6-250ci 4.1L 1 BBL Vin D 1 per Vehicle 1978 L6-250ci 4.1L 1 BBL Vin D 1 per Vehicle 1977 L6-250ci 4.1L 1 BBL Vin D 1 per Vehicle CAPRICE (3) 1977-1979 1979 L6-250ci 4.1L 1 BBL Vin D 1 per Vehicle 1978 L6-250ci 4.1L 1 BBL Vin D 1 per Vehicle 1977 L6-250ci 4.1L 1 BBL Vin D 1 per Vehicle CHEVELLE (1) 1977-1977 1977 L6-250ci 4.1L 1 BBL Vin D 1 per Vehicle CHEVETTE (4) 1976-1978 1978 L4-98ci 1.6L 2 BBL Vin E 1 per Vehicle 1978 L4-98ci 1.6L 2 BBL Vin J 1 per Vehicle 1977 L4-98ci 1.6L 1 BBL Vin E 1 per Vehicle 1976 L4-98ci 1.6L 1 BBL Vin E 1 per Vehicle IMPALA (3) 1977-1979 1979 L6-250ci 4.1L 1 BBL Vin D 1 per Vehicle 1978 L6-250ci 4.1L 1 BBL Vin D 1 per Vehicle 1977 L6-250ci 4.1L 1 BBL Vin D 1 per Vehicle MONZA (2) 1975-1976 1976 L4-140ci 2.3L 1 BBL Vin A 1 per Vehicle 1975 L4-140ci 2.3L 1 BBL Vin A 1 per Vehicle NOVA (3) 1977-1979 1979 L6-250ci 4.1L 1 BBL Vin D 1 per Vehicle 1978 L6-250ci 4.1L 1 BBL Vin D 1 per Vehicle 1977 L6-250ci 4.1L 1 BBL Vin D 1 per Vehicle VEGA (4) 1973-1976 1976 L4-140ci 2.3L 1 BBL Vin A 1 per Vehicle 1975 L4-140ci 2.3L 1 BBL Vin A 1 per Vehicle 1974 L4-140ci 2.3L 1 BBL Vin A 1 per Vehicle 1973 L4-140ci 2.3L 1 BBL Vin A
interchange
MFG/Brand Part Number BWD AUTOMOTIVE VC405 BWD AUTOMOTIVE VC406 BWD AUTOMOTIVE VC447 BWD AUTOMOTIVE VC464 BWD AUTOMOTIVE VC466 STANDARD MOTOR PRODUCTS CPA138 STANDARD MOTOR PRODUCTS CPA166
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