Pages 11–14 (4 pages)
Operation: Automatic Choke, Distributor Vacuum and Dashpot
From the 1955 Lincoln, Mercury and Thunderbird Holley 4000 Four-Barrel Carburetor Service Manual
- Year
- 1955
- Models
- Holley Model 4000 four-barrel downdraft; 1955 Lincoln and Mercury cars, Ford Thunderbird and police cars
- Publication
- Form No. C-228
- Pages
- 32
The pump vent through the hollow rod, then the thermostatic automatic choke with offset choke plates, vacuum piston and fast idle cam. Also the distributor vacuum passages and spark control valve that gives intermediate spark advance on acceleration, and the dashpot anti-stall device fitted with automatic transmissions or power brakes.
What this section covers
- Automatic choke
- Fast idle cam
- Distributor vacuum passages
- Spark control valve
- Dashpot
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