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12

It absolutely does use more fuel. What the choke does is creates a restriction in the carburetor, which in turn creates a higher vacuum so the engine will draw more fuel when it is cold. This is called fuel enrichment. It allows the engine to warm up and keep running, but at the expense of using more fuel to make it happen. When leaving the choke on for a ...


8

You should avoid over-use of the choke if possible, as over-fuelling the engine will cause more carbon build up, shortening the life of the plugs and reducing the time before the engine needs a "decoke" to get rid of the build-up. Plus it wastes fuel! Of course, too little is just as bad... I've always gone for the following, though I don't know if it's ...


5

How the choke works The choke of a scooter consists of a dedicated choke nozzle in the fuel reservoir and two narrow drillings leading to the venturi (the pipe where the air goes through): When the motor cranks and the choke is active, the slight underpressure in the venturi sucks in extra fuel through this drillings. When the choke is inactive, a piston (...


4

I assume you mean that when the engine is cold, it requires the choke, but then if you stop and try to restart, then you have to turn off the choke. This is by design. The choke is a tool to allow a cold engine to run by enriching the fuel/air mix through restricting (or choking) the air supply - once the engine is warmed up, this is not needed any more. ...


4

What is the optimal use of a choke? Knowing how to use it as explained by Nic C What are the cons of using it incorrecly? Fouling spark plugs which will cause a misfire even after it warms up. Gasoline getting in the oil past the piston rings due to being over rich too long and and causing pre-mature engine wear and lower compression due to the rings ...


4

You have two separate idle settings on your carburetor. One is for the choke idle and the other is for your off-choke idle. When you start your vehicle in the morning the idle setting will be fixed on the last termperature of your vehicle, so if you drove home the night before and the engine was at full operating temperature you would have that idle ...


3

No (or maybe more accurately – not for long), that is why you have a choke. Opening the throttle does allow more air in, but should also be causing more fuel to come in as well to preserve the mixture. It sounds like you might have a stuck choke or perhaps your idle adjustments are off. That said, when the engine is stopped, there is no airflow to pull in ...


3

Turn the choke ON to start a cold engine. Once it is running, set it to PARTIAL until the engine is warm. Once the engine has been running a few minutes, set the choke to OFF. Choke helps the engine run rich. This is necessary when the engine is cold. The engine will start easiest with the choke on. The engine will run best when warm with the choke off.


3

No. The manufacturers knew what they were doing. They put the plate there for a reason: and that is so that the air filter doesn't get stuck in your choke and get torn up. I discovered this by trying and getting the filter chewed up in the choke hole. That being said, it's not that expensive of a mistake: it just requires the purchase of a new air filter. ...


3

When the motor is cold, it needs a higher ratio of fuel to air in the cylinders in order to get them to fire, i.e. you need to add "extra" fuel in order to get it to start. Once warm, however, the engine doesn't need such a rich fuel mixture. By activating the choke, you allow proportionally more fuel into the engine than usual, which lets the motor start; ...


2

An automatic choke is just a bimetallic spring. When the temperature gets cold enough the spring will pull the choke closed. There are two catches here. The first is that while the spring will put pressure on the choke to close it, it doesn't actually close until pressing the gas pedal at least once. Rapidly pressing and then letting go of the pedal spays ...


2

If you require full clearance for both front and rear, consider that a set of vehicle lift ramps will work well and provide appropriate safety for a bit of extra work. As Solar Mike suggests, use a solid surface, paved, flat and level. If you can't get paved, flat and level, use a professional. Drive the vehicle onto the lift ramps. The front wheels are ...


2

You need a level solid surface and chocks both sides of the rear wheels. Soft ground, gravel etc can lead to problems so avoid that type of surface.


2

The BikesIndia page has a good picture of the choke switch on a Saluto: This shows clearly where on and off are. If yours is different, just try it. When cold, it may not start at all without the choke. Once the engine is warm, turning it off again will allow the engine to run more smoothly with less smoke.


2

The choke is a cold starting device and should only be used until the engine is up to operating temperatures. Depending on ambient conditions, this could be less than the first km. Indeed in certain warm / hot conditions, the choke will barely be required at all. Riding with the choke engaged for longer than needed will cause the engine to run rich. That ...


2

If when you put the choke on the engine does not quit, it indicates the engine is running too lean (not getting enough fuel). This can be caused by a carburetor that is dirty or needs to be adjusted, an air leak between the carburetor and the engine, or bad/old fuel.


2

Yes this used to happen with me too. In the morning the motor is very cold and needs more fuel for burning. Thus without choke the normal mixture of air and fuel goes inside the engine, which it is unable to burn. Pulling the choke increases the fuel amount in the mixture which burns instantly in the engine thus giving the required thrust to bike. It ...


2

My bet would be an air leak in you intake, this causes the mixture to go excessively lean. Consequently, it only runs decently when you choke it, and even then it may run badly because the mixture is not consistent. You can detect air leaks by spraying air leak finder or just wd-40, on places where there could be an air leak. If there's a leak, you'll hear a ...


2

Your carburetor looks like a Mikuni VM series, though I could be mistaken. Usually, pulling up the choke engages it, meaning that more gas per amount of air is flowing into the engine (air input is choked). Once the engine is running, you can allow the correct amount of air to flow into the engine (provided your carb is adjusted correctly) by pushing the ...


1

Use a Bowden cable - think of the cable used for brakes on a bike... It is flexible and has been used for throttle cables for years... Connect it to the servo or mechanism on the body or handle bar somewhere...


1

Check this out.. It's the same question on another forum. Based on the markings on other motors I have, that should be closed/on and up would be open/off. Post a picture of the switch in the horizontal position too for more accurate help.


1

Turn the choke ON to start a cold engine. I cannot see the image, so I do not know if this is vertical or horizontal. If you can look at the choke blade, the choke is ON when it is blocking the path. Once it is running, set it to PARTIAL (diagonal) until the engine is warm. Once the engine has been running a few minutes, set it to OFF. Choke helps the ...


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