What are the symptoms of incorrect engine timing?

[VanBrandon]

Incorrect engine timing can cause symptoms such as delayed ignition, poor acceleration, engine shaking, and insufficient power. It is recommended to visit a 4S shop to adjust the timing belt and restore vehicle performance. If the ignition is too late, it may cause difficulty in starting or insufficient power; if the ignition timing is too early, the engine may produce a metallic knocking sound (similar to "clattering") when suddenly accelerating during operation. Engine timing is divided into two types: 1. Valve timing refers to the timing mechanism (including the camshaft, valves, rocker arms, etc.) that supplies the combustible mixture to the cylinder at the correct time and exhausts the waste gas at the correct time; 2. Ignition timing refers to igniting the combustible mixture in the cylinder at the precise moment to drive the piston and perform work.