What are the factors affecting the ignition timing advance angle of an engine?

[ArthurLynn]

Factors affecting the ignition timing advance angle of an engine are: 1. Engine speed; 2. Load and fuel type. The ignition timing advance angle refers to the spark plug firing before the piston reaches the top dead center of compression, igniting the combustible mixture in the combustion chamber. The functions of the ignition timing advance angle are: 1. To ensure the effective utilization of the energy generated by the combustible mixture; 2. To improve the engine's output power. The adjustment method for the ignition timing advance angle is: 1. Check if the platinum contacts have any signs of burning; 2. Remove the secondary chamber vacuum hose from the vacuum advance compensation device, block the two ports connected to the hose, and let the engine idle; 3. Use a timing light to check the ignition timing advance angle; 4. When rotating the distributor housing counterclockwise, the ignition timing advance angle will increase; 5. When rotating the distributor housing clockwise, the ignition timing advance angle will decrease.