Do you want to elevate the problem of cold start of your bike? Does your engine overheat whenever you race your mean machine? If your bike is not running smooth and the fuel efficiency has reduced to a great extent then tuning your carburetor can help in optimal power delivery and improved performance of your bike. This will not only increase the bike’s engine life but will also give you an optimal air-fuel setting. If you’re wondering how this is done then here’s the detailed guide to adjust the carburetor without the help of any mechanic.
Know Your carburetor well
Learning to tune your carburetor without knowing how it functions is like wishing to fly a plane without knowing how to fly it. The carburetor is that part of your bike which supplies fuel to your engine with the phenomenon known as Vacuum Venturi Effect. Air enters the carburetor through the air intake process and then this phenomenon gradually speeds up because of the narrow passage available on the walls of the carburetor. The air blows into a valve known as the throttle slide that is controlled by the throttle cable. When this throttle opens up, the throttle slide also gets elevated due to the cable. This elevation makes the air pull up the fuel to the main jet and the mixed fuel and air make their way to the engine.
The needle and the size of the jet decide the amount of fuel that will flow in the engine. When more throttle is applied more fuel draws into the engine. However, as your bike gets old it may have vacuum air leaks that can lead to more amount of air being drawn. This can change the air or fuel mixture to a lean mixture which will adversely affect the performance of your bike. But the good news is that you can easily resolve this issue with the help of carburetor tuning.
Warm up the engine
While we are getting started to tune in the carburetor the first thing you need to do is warming up your engine. You can take a ride for 5-10 minutes and this will ensure that your engine system warms up well. You’ll get a bad tune if you don’t warm up the engine. so never leave your engine idle as it will affect the tuning process badly.
Search the air/fuel screw
If you want to adjust the air-fuel ratio then the air and fuel screws can be of great help. You can also set the engine’s ideal speed with another screw that sets the engine at an idle run. This screw doesn’t affect the mileage or pick up on your bike. You might be thinking how to find the machine held for fuel and air screw. It’s really simple, the air screw is located in two-stroke bikes and the fuel screw is located in the four-stroke bike. The fuel screw gives you a lean mixture when turned clockwise and a rich mixture when turned anti-clockwise. The air screw, on the other hand, gives a rich mixture when turned anti-clockwise and a lean mixture when turned clockwise. You can get more fuel and less air if you have a rich mixture and less fuel and more of the air if you have a lean mixture.
Tune the engine for improved performance
Now it’s time to accelerate your engine to approximately 3000 rpm by turning the ideal screw. After this, you need to slowly tune the air or fuel screw to get a lean mixture. The RPM of your engine decreases with the leaning of the mixture so you must ensure to tune the screw to the maximum leanest point. You’ll also need to turn the idle-screw so that the engine doesn’t stall. You can identify the stability of the RPM of the engine from the tachometer. Now you’ll need to turn the fuel screw in an anti-clockwise direction and this will increase the RPM gradually. Don’t try to hasten will doing this, keep a count while turning the screws. You’ll find the RPM stable once you have turned the screw 3-4 times. Congrats you have found the ideal setting for your engine. Now you need to turn the throttle in order to run your engine at about 1000 RPM. Now restart your engine and go for a ride. You’ll be amazed to experience the difference in engine sound and throttle response.
Even though it might seem to be a herculean task to tune in your carburetor it’s not as difficult as it seems to be. Follow these simple steps and try calculating the mileage of your bike. The performance of your bike will surely amaze you. If you want to have the best ride of your life start tuning the bike or better yet opt for Raybarbikes, known for their great mileage.
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