Choke (Cold Start Enrichment)
A choke enriches the fuel mixture for starting a cold carburettor engine by restricting the air entering the carburettor.
What is Choke (Cold Start Enrichment)?
It can be operated by a cable from the dashboard or automatically by a thermostat. Fuel-injected engines enrich the mixture electronically instead. Leaving a manual choke on after warm-up wastes fuel and fouls spark plugs. Some automatic chokes are heated by coolant or electricity.
How it works
A flap above the venturi partly closes, increasing vacuum so more fuel is drawn in.
Why it matters for your car
A sticking automatic choke causes rich running, black smoke or poor cold starting. Push a manual choke back in gradually as the engine warms up.
Other terms
- Bearing Puller (Gear Puller)
- Boost Pressure Sensor
- Brake Line
- Brake Pad Wear Sensor
- Brake Pressure Sensor
- Cylinder Honing
- Drum Brake Adjuster
- Dual-circuit Brakes (Split Brake System)
- ESP / Stability Control Warning Light
- Flooded Engine
- Front Grille
- Goodwill Repair
- Halogen Bulb
- Headlight Unit (Headlamp Assembly)
- Headrest (Head Restraint)
- Rear-View Mirror (Interior Mirror)
- Sun Visor
- V6 Engine
- Window Regulator
- Wire Wheels (Spoked Wheels)