Damage to the chronograph guide may cause the following faults:

1. Engine performance degradation: The damage of the timing guide plate may cause the camshaft phase to be unable to be adjusted correctly, thus affecting the timing control of the engine. This may lead to engine performance degradation, such as reduced power output, poor acceleration, and reduced fuel economy.

2. Increased engine noise: The damage of the guide plate of the chronograph may lead to inaccurate camshaft phase adjustment and incorrect contact timing between the cam and the valve. This may cause the valve to collide with the piston, resulting in abnormal noise, such as knocking or bumping.

3. Engine jitter and instability: The damage of the timing guide plate may lead to unstable camshaft phase adjustment, and then affect the smooth operation of the engine. This may lead to engine jitter, vibration or unstable idle speed.

4. Emission problem: The damage of the guide plate of the chronograph may lead to inaccurate camshaft phase adjustment, which will further affect the combustion efficiency and exhaust control. This may lead to emission problems, such as excessive emissions and increased tail gas pollution.

5. It is difficult to start the engine: the damage of the guide plate of the chronograph may lead to incorrect camshaft phase adjustment, which will further affect the starting process of the engine. This may lead to engine starting difficulties, prolonged starting time or failure to start.

The damage of the guide plate of the chronograph may lead to a variety of engine failures, which will affect the performance, reliability and emission control of the engine. Therefore, once there is a problem with the guide plate of the chronograph, it should be repaired or replaced in time to ensure the normal operation of the engine.