Is the choke open or closed?
20/04/2020 · How do I know if my choke is open or closed? When the choke butterfly is allowing the most air flow, without restriction, it is open. Like a door. Open lets things through. when the choke is restricting the flow of air, it is closed. Click to see full answer.
What should I do if the choke does not close?
12/02/2022 · With this in mind, how can I tell whether my choke is open or closed? The choke butterfly is open when it allows the greatest air movement without restriction. As if it were a door. Things are allowed to pass through while the door is open. The choke is closed when it restricts the passage of air. Is it harmful to run an engine with the choke on, apart from the above? With …
Should the choke be open when the engine is running cold?
31/12/2018 · "When The Choke Is On Is It Open Or Closed?Watch more videos for more knowledgeIs The Choke Supposed To Be Open Or Closed ... https://www.youtube.com/watch/n...
What does the choke do when it's on?
When the “choke” is closed you will see a metal plate restrict the opening of the carb throat. This is the CHOKE ON! position. When the “choke” is open you will not see the metal plate and you can see right into the throat of the carb.
Which way is the choke on?
Similar to the throttle, the choke plate rotates from a horizontal to vertical position to open up the passageway and allow more air to get by. The choke is located before the throttle, and manages the total amount of air going into the engine. First attempt to start the engine with choke closed.
Is the choke up or down?
Typically the “choke” is on when the choke lever is in the up position or when the choke lever is inline with the handle bars on your bike. ... The “choke” is off when the choke lever is down or when the choke lever is facing you if your choke is a handle bar mount.21-Sept-2018
How do you open the choke on a lawn mower?
3:275:40Lawnmower Won't Start? Watch This EASY FIX! AUTO- CHOKE ...YouTubeStart of suggested clipEnd of suggested clipAnd bent it toward the muffler just about a quarter inch at the most.MoreAnd bent it toward the muffler just about a quarter inch at the most.
What is the choke position on a lawn mower?
Pull the Throttle onto Choke Position You'll normally find it on the left side of your riding lawn mower. They're easy to identify, thanks to their labeling picture of a rabbit and turtle.
How to start a bike with a choke?
How do you start a choke on a bike? 1 Look for the “choke” lever or cut-off switch. For cold starting, there is usually a choke lever or “cut-off switch” on the handlebar. 2 Open the choke lever. 3 Turn your ignition to the “on” position. 4 Start the engine. 5 Close the choke and open the throttle.
Why does my car stall?
Diluted gas may cause your engine to stall. Dirty Air Filter – As the air filter cleans the air entering the carburetor , it will eventually become dirty or clogged and may prevent the proper amount of air from mixing with the fuel, causing your engine to stall.
What is the purpose of a choke valve?
By restricting the flow of air into the throat of the carburetor, the choke valve reduces the pressure inside the throat, which causes a proportionally-greater amount of fuel to be pushed from the main jet into the combustion chamber during cold-running operation.
How to choke an engine?
How do you choke an engine? Normally, the choke is closed when starting cold and gradually opened in the few seconds after the engine starts. It is left fully open once the engine is running and may not need to be closed when starting warm. A typical starting procedure for an engine with a choke might be: Close the choke (usually on carburetor).
How to start a cold engine?
For cold starting, there is usually a choke lever or “cut-off switch” on the handlebar. Open the choke lever. Turn your ignition to the “on” position. Start the engine. Close the choke and open the throttle.
Why do you close the choke plate when starting a cold engine?
When doing a cold start, the choke should be closed to limit the amount of air going in. This increases the amount of fuel in the cylinder and helps to keep the engine running, while it is trying to warm up. Once the engine has warmed up, a temperature sensing spring slowly opens the choke plate to allow the engine to breath fully.
What is a choke plate?
The choke is a plate in the carburetor that opens and closes to allow more or less air into the engine. Similar to the throttle, the choke plate rotates from a horizontal to vertical position to open up the passageway and allow more air to get by.
How to check a carburetor?
Rags. Safety glasses. Step 1: Wait until morning to check the choke. Check the choke and see if it is closed when the engine is cold. Step 2: Remove the air filter. Locate and remove the engine air filter and housing in order to access the carburetor. This may require the use of hand tools, however, many times the air filter ...
Can you start an engine with an air cleaner removed?
Warning: Never start or accelerate the engine with the air cleaner removed in case of a back fire. When you inspect the choke, you also get a chance to look inside the carburetor. If it’s dirty, you might want to consider cleaning out the whole assembly to keep the engine running smooth.
Why does my choke not open on cold start?
Once the car has warmed up, if the choke does not open fully, the restriction in air may result in reduced power.
Why is a choke valve important?
Choke has importance in a naturally aspirated gasoline engine. When the vehicle is kept stationary for a long time or in cold season, it may find difficulty in starting of the engine because gasoline droplet does not vaporize well in cold engine.
What is a choke in a carburetor?
Choke is a valve which modifies the intake manifold pressure and thereby increase the amount of fuel in the air-fuel mixture. Choke is generally used in a naturally aspirated engine with carburetor. Choke is a butterfly valve that mounted on the inlet of air passage of carburetor ...
What is a choke valve?
Choke is a butterfly valve that mounted on the inlet of air passage of carburetor (upstream from carburetor venturi tube). Normally choke will be in open position, in which valve is parallel to the air flow, and has no effect on the air flow. When choke is actuated by mechanical or by pneumatic method, it rotates an angle restrict the air flow ...
Why do you need a choke on a bike?
The choke is needed because the fuel does not evaporate completely when the engine is cold. Only gas vapor burns.
What does it mean when a bike choke is open?
When the choke is in the "open" position the lever is parallel to the flow of air from the airbox. I would assume open isn't in active state of choke and would be the position the bike should be in when normally operating. I'm guessing that you need to "close" the choke to "choke" off the airflow and actually have it be "choked".
How far off the choke butterfly plate is the actuating lever?
The confusion usually lies in the fact that the actuating lever is 90 degrees "off" the actual choke butterfly plate...... So when the lever is aligned with the centerline of the airflow, the plate is actually restricting the flow (Choking the bike)....
Does gas burn vapor?
Only gas vapor burns. Liquid gas does not . So cold, a good percentage of the gasoline is in liquid, rather than vapor. Since there is only the "right amount" of fuel, and some if it didn't evaporate properly, the choke throws in a little extra fuel. this way, a partial evaporation of more fuel, means the right amount is in vapor form.
What does it mean when a choke is on?
When the choke is "on" it is restricting air to the carb, the whole purpose of the choke. Like choking someone with your hands "on" their neck which would prevent them from getting air. Hands "off" would allow them to get air.
Do carburetors have chokes?
Some carburetors do not have chokes. chokes are a butter valve on the inlet to the carburetor. My NH750 has an enrichment circuit instead. Like a choke, it adds some extra fuel, but does it with internal passages in the carburetor, rather than a butterfly. J.
Why do you need a choke when starting an engine?
Even if your engine starts without choke from cold, this is an optimum way of getting the most life out of your engine. Using choke gives your engine a richer mix (more fuel). This means there wont be such a big bang in the head, which means the engine will warm up properly and not too fast which can cause problems.
Can you thrash an engine while on choke?
Also, don't thrash the engine (high revving) whilst it's on choke, or else it makes the whole procedure pointless. Leaving choke on by accident or on purpose can cause your engine life to reduce rapidly. NEVER forget to turn it off.
Why do we choke in cold engine?
The purpose of the “choke” is to enrich the air fuel mixture to help start a cold engine. Cold is the key word here because a “cold engine” will not easily vaporize the fuel in the air fuel mixture entering the engine. So we need to enrich the mixture in a cold engine to increase the amount of combustible vapour present.
What happens when a piston is pushed downward in the engine cylinder?
When KABOOM occurs the piston is pushed downward in the engine cylinder, which turns the crankshaft, which turns the gears in the transmission, which drives the chain , which turns the rear wheel gear, which makes you go zoom! So KABOOM is most important.
How to warm up a bike before driving?
The ½ open throttle will help bring more air into the cylinder allowing the air fuel mixture to ignite. Once the bike starts release the throttle and allow the bike to warm up before driving away.
When do you choke a bike?
We only need to “choke” a bike when the engine is cold...that is to say not as warm as a cup of coffee. If the bike is warmer than a cup of coffee no choke is needed. The above condition occurs when you choke a bike when it does not need it. The bike will become flooded and not start.
Why is kaboom important?
So KABOOM is most important. When discussing the air/fuel mixture in the engine, the key concept is the ratio of fuel to air. For all fuels there is an upper and lower air fuel ratio that will support combustion. If your too rich...no kaboom, if your too lean...no kaboom. It needs to be just right to get the best performance out of your engine.
What is the choke plate on a carburetor?
Inside the carburetor is a choke plate. This is a movable plate that opens and closes allowing more airflow through the carb or less. When the choke is engaged, the choke plate covers some of the carb throat opening. We would say that the “choke” is on or closed.
How to get a carb off a choke?
Move the “choke” lever back and forth. When the “choke” is closed you will see a metal plate restrict the opening of the carb throat. This is the CHOKE ON! position. When the “choke” is open you will not see the metal plate and you can see right into the throat of the carb. This is the CHOKE OFF position.
How do chokes work?
The automatic chokes, which are the most common, work on a spring mechanism housed in a plastic cover located on the passenger side of the carburetor. These chokes are electrically heated to promote expansion and contraction. When the engine is cold the spring contracts, coiling more tightly. ...
What happens when an engine is cold?
When the engine is cold the spring contracts, coiling more tightly. This contraction pulls on the choke rod and puts pressure on the choke to close completely. When the engine is started, the closed choke creates more vacuum in the engine, pulling in more fuel.
How does a vacuum choke work?
As soon as the engine starts, a vacuum is applied to the vacuum choke pull-down servo, which in turn pulls the choke open slightly--just enough to allow enough air into the engine to keep it running . As the engine continues to warm up, the electrical choke responds to the heater inside and begins to expand and as it does, ...
Do carburetors have chokes?
Carburetors have either manual or automatic chokes. The manual chokes require a choke cable to be mounted inside the car. There are two types of automatic chokes. The older style chokes have a coil spring mounted in the intake manifold with a rod from the spring to the choke.
How to close a choke that is not coming off?
If the choke stays on too long or does not come all the way off, then turn the choke housing clockwise until the choke just begins to open and stop and tighten the screws. If the choke does not close enough, turn the choke housing counter clockwise until the choke is just closed.
