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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 ...


7

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

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 ...


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 ...


4

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 ...


2

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.



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