What is the normal range of ignition advance angle?

[CameronFitz]

The normal range of ignition advance angle is between 6 to 12 degrees. The ignition advance angle refers to the crankshaft rotation angle from the moment of ignition until the piston reaches the top dead center of compression. This angle helps the engine achieve optimal power, fuel efficiency, and emissions. To prevent power loss, it is recommended to set the ignition advance angle above 6 degrees, which is also the required rotation angle for car startup. An appropriate ignition advance angle allows the engine to perform more mechanical work per cycle. If the ignition advance angle is too large, knocking may occur; if it is too small, the engine temperature will rise. Factors affecting the ignition advance include engine speed and the combustion speed of the air-fuel mixture.

[CalebFitz]

As a friend who frequently works on car repairs, I've found that the normal ignition timing advance typically varies between 5 to 30 degrees, depending on engine speed and load. At idle, around 5 to 10 degrees is usually appropriate, while during acceleration or climbing hills it can increase to 15 to 25 degrees, and at high RPMs it may approach 30 degrees to enhance power. When the angle is set correctly, combustion efficiency improves, leading to better fuel economy and smoother operation; if the timing is off, the car is prone to knocking or sluggish acceleration. Modern vehicles rely on the ECU for automatic adjustment, but older models may occasionally require manual tuning. Different vehicle models have varying values - SUVs tend to be on the lower end while sports cars lean toward higher values. Regular checks with diagnostic tools can ensure system stability and prevent unexpected failures.

[Jeanette]

After driving several cars in my family for a long time, I've accumulated some experience. The normal range for ignition advance angle is roughly 10 to 25 degrees, with specific variations depending on road conditions. In city driving, the idle angle is smaller, starting around 5 degrees, while during high-speed cruising, pressing the accelerator advances it to about 20 degrees. With the correct angle, the engine runs smoothly and accelerates quickly; deviations can lead to increased fuel consumption or insufficient power. Last time my car had issues, it turned out to be improper ignition angle settings, and after adjustment, it became much more fuel-efficient. New cars have smart computer controls, but for older vehicles, it's important to watch out for sensor aging affecting the values. I recommend consulting the manual for standard values under different operating conditions, and timely maintenance can extend component lifespan.

[HaydenAnn]

When I first started learning about cars, I found out that the normal ignition advance angle typically ranges between 5 to 30 degrees. At low engine speeds, the angle is smaller, around 5 degrees, and can increase to about 25 degrees at higher speeds. This setting helps gasoline burn more completely, improving horsepower and reducing pollution. If the value is not precise, the car may shake or the engine efficiency may drop. Nowadays, most cars automatically adjust the ECU to optimize this value, making maintenance simple. Even beginners can monitor the car's computer data to determine if professional inspection or adjustment is needed.