Motorcycle carburetor is an important part and it plays a big part role in the running of the motorbike and Scooters. When you buy a motorbike as a brand new one the carburetor comes as a fine tuned one to provide you the best performance. Fine tuning will provide you smooth running and fuel efficiency which will save you lot of money. Latest motorcycles are coming with injection system that is supported by many electronic sensors. Mostly the 200cc and above size motorcycles are fitted with the latest fuel injection system.
The carburetor gets petrol from the tank through the gravity pressure. The nozzle (Needle) assembly in side of the carburetor vaporizes it for fire in the engine. It got mixed with the incoming air and makes it as air mixed petrol vapor that comes to fill the vacuum created by the piston in the cylinder. So the rich mixture passes in to the cylinder to be fired by the spark plug to provide the power for operation. The carburetor consists of many parts where some are preciously made like the jet Nozzle.
In the older model carburetor there are air screw and petrol vapor screws. Now the latest motorbikes and scooters are coming with a single screw to adjust the air fuel mixture. After good warm up you can adjust this screw to get the better idle speed. It is better to do the job by your mechanic. If you used to ride motorbike in the night time, then ask the mechanic to switch on the head light and to adjust to get the idle speed.
There is a choke fitted in for cold start which will reduce the air flow and make the air fuel mixture richer with petrol for easy starting.
Latest motorcycles are fitted with auto choke. In the morning start they will raise the engine speed to get it warm. Once the engine is becomes with normal temperature the auto choke will cut and the motorcycle or scooter engine will come to normal idle speed.
The carburetor jet needle is damaged. This cause the petrol to be drained. This part should be replaced by your mechanic.
First open the drain screw of your carburetor, if water is coming through it means that was the problem. If you found water in the drain, do this procedure at least twice after some interval. The tank too should be cleaned, if there is any water.
This should solve your problem. Otherwise go to your garage and consult with them.
How Does A Motorcycle Carburetor Work? bikebd.com
Carburetor adjustment and its importance in bike engine performance. bikes4sale.in
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