What are the symptoms of incorrect timing belt installation?

[DiKingston]

Symptoms of incorrect timing belt installation: 1. After the timing belt is installed, if it is off by one tooth from the correct timing point, it will cause the engine warning light to illuminate, difficulty in starting the vehicle, and the engine control unit will report a timing fault code; 2. If components such as the timing belt, timing belt tensioner, and timing belt tensioner pulley are not properly installed, or if they are off by many teeth, it can lead to timing belt breakage and the camshaft not operating normally. The timing belt is a crucial part of the engine's valve timing system, ensuring accurate intake and exhaust timing by connecting to the crankshaft and maintaining a specific gear ratio. Belts are used instead of gears for transmission because they produce less noise, have minimal self-variation, and are easier to compensate for. However, the lifespan of a belt is certainly shorter than that of metal gears, so it must be replaced regularly.