When do you need to use a manual choke on a car?

1. What is the purpose of a manual choke?
2. When should I use choke on my engine?
3. When did cars stop using manual choke?
4. Can you drive a car with the choke on?
5. Does choke open or closed carburetor?
6. How long should you leave the choke on?
7. Do modern cars have a choke?
8. Should the choke be open or closed when starting?
9. Why do old cars need a choke?
10. Why do engines have chokes?
11. When did cars get automatic chokes?
12. Does a carburetor need a choke?
13. How do you start a car with an electric choke?

What is the purpose of a manual choke?

A manual choke is a mechanical device that links a retractable knob in the driver's compartment, via a cable, to a metal plate inside the carburetor. The metal plate moves to increase or decrease the amount of intake air in order to provide the optimum fuel mixture for the engine.

When should I use choke on my engine?

The choke allows for a richer fuel mixture to be sent to the engine, increasing the rpm's on a cold engine. Without a choke, cold starts could cause very low idles on some cars, resulting in rough vibrations. It will also take the car longer to warm up to operating temperature.

When did cars stop using manual choke?

Manual choke

Most young drivers would never have experienced a manual choke, but for some this was the norm when it came to starting their vehicle years ago. With the introduction of fuel injection, the manual choke disappeared from the market in the early 90s.

Can you drive a car with the choke on?

As it warms up, you'll hear it start sounding boggy occasionally. As it does, open the choke a bit until it smooths out. You can drive the car as you do this.

Does choke open or closed carburetor?

The choke is a plate in the carburetor that opens and closes to allow more or less air into the engine. ... The choke is only used when starting a cold engine. When doing a cold start, the choke should be closed to limit the amount of air going in.

How long should you leave the choke on?

After 30 seconds is usually enough for most bikes. Especially a small thumper. Just reduce the choke slowly. If it wont idle smoothly (sounds like an asthmatic pensioner) then it probably wants the choke on a bit longer.

Do modern cars have a choke?

All production vehicles today use computerized fuel injection systems to feed fuel and air into the combustion chamber of the engine. ... To start the car, you had to pull out the choke and let the engine warm up. Modern fuel injection systems don't require this warm-up period.

Should the choke be open or closed when starting?

The choke is only used when starting a cold engine. When doing a cold start, the choke should be closed to limit the amount of air going in. Once the car has warmed up, if the choke does not open fully, the restriction in air may result in reduced power.

Why do old cars need a choke?

A choke does exactly what it sounds like: In cold weather/ cold engine situations, older cars had a manual choke that reduced the amount of air entering the carburetor when starting. This made for a higher gas to air ratio, enabling the car to start.

Why do engines have chokes?

A choke valve/cable is designed to restrict the flow of air in the carburettor of an engine. This helps enrich the fuel-air mixture, improving the ability to start an engine in low temperature conditions. ... Simply put, the choke is about making more fuel available for the engine to use.

When did cars get automatic chokes?

In older carbureted cars, the choke was controlled manually by a Bowden cable and pull-knob on the dashboard. For easier, more convenient driving, automatic chokes, first introduced in the 1932 Oldsmobile, became popular in the late 1950s.

Does a carburetor need a choke?

When an engine is cold, it requires a richer Air/Fuel Mixture to get started. ... As the engine warms up, it is able to run on a leaner mixture. The choke plate must be opened gradually to allow more air into the engine. Carburetors are available with or without a choke.

How do you start a car with an electric choke?

If the car is in good tune, depress the throttle fully once to set the choke and turn the key to engage the starter. If it has a carburetor, press the gas to the floor once, let up, then turn the key. The auto choke is either thermostatically or electrically controlled.