## How do you set a carburetor mixture?

Carb Quick GuideVerify carburetor is set to stock settings:Start bike, bring to operating temperature.Set idle speed adjusting screw, clockwise to increase rpm, counter-clockwise to decrease rpm. Adjust idle mixture by turning idle mixture screw slowly clockwise until the engine runs poorly.

## How do you calculate air/fuel ratio?

Calculating the RatioSo 1 molecule of methane has a molecular weight of: 1 * 12.01 + 4 * 1.008 = 16.042.One oxygen molecule weighs: 2 * 16 = 32.The oxygen-fuel mass ratio is then: 2 * 32 / 1 * 16.042 = 64 / 16.042.So we need 3.99 kg of oxygen for every 1 kg of fuel.

## What is a rich mixture?

A rich mixture is a fuel/air mixture containing an excessive proportion of fuel. A rich mixture provides enough fuel to use up all of the oxygen in the cylinder. A rich mixture has too much gasoline and not enough air.

## Can I drive with a bad air fuel sensor?

Driving with a faulty O2 sensor means the computer won’t be getting the correct reading of the mixture and hence it won’t be able to adjust the air-fuel mixture properly. But if your engine starts and runs, and can stay running, it’s drivable.