How do you calculate total timing?

How do you calculate total timing?

Rev the engine past the point where your mechanical advance is fully engaged. (Usually, 3,000 – 3,500 rpm will do it.) Watch the timing mark on the harmonic balancer using the timing light. Rotate the distributor until the timing mark lines up at zero with the light.

How do you identify a rich fuel mixture?

Black smoke from exhaust When your engine is running rich, it will cause bad emissions. A rich air-fuel mixture will create black smoke, which will then come out from your exhaust pipe. If it looks by your exhaust pipe like you have a diesel engine, but you don’t – then it is really time to check the air-fuel mixture.

How do you fix a running rich carburetor?

The 6 main ways to fix a motorcycle running rich are to:

1. Adjust the air to fuel ratio.
2. Check if the needle is sticking in the carburetor.
3. Check for stuck open floats.
4. Clean your air filter.
5. Check for stuck open butterfly valves.
6. Change your O2 sensors if your motorcycle has them.

What happens if engine gets too much air?

More air can cause a car to run lean which means that there is too much air and the fuel is burning too quickly. This means the combustion will not have as much power to move the piston. Running lean can also cause detonation in the engine chamber and damage your piston.

How do you adjust a fuel mixture screw?

Make adjustments 1/2 a turn in either direction to find the smoothest idle speed. Turn the screw counterclockwise and clockwise 1/2 a turn from the middle position and listen to the sound of the idle. Set the screw in the position where the engine’s idle sounds most even and smooth to balance the fuel mixture.

Which way do you turn the idle screw?

Turn the idle screw slowly using a screwdriver, twisting the screw counter-clockwise to lower the motor’s RPM or clockwise to increase RPM. Stop adjusting the screw when the tachometer indicates the desired RPM range.