What Are the Causes of Engine Noise After Timing Belt Replacement?

[MollyAnn]

The timing belt is a crucial component of the engine's valve train system, ensuring accurate intake and exhaust timing by connecting to the crankshaft and maintaining a specific gear ratio. The causes of engine noise after timing belt replacement are as follows: 1. The timing belt is too tight: Simply loosening the timing belt will eliminate the noise. 2. Tensioner pulley damage: Replace the tensioner pulley. 3. Abnormal valve clearance: Inspect the valves and replace related components. 4. Misaligned or loose timing pulley: Adjust the timing pulley to the correct position. Precautions for timing belt replacement include: 1. Replacement intervals vary by brand and mileage; generally, the belt should be replaced every 60,000–80,000 kilometers. 2. Mark the crankshaft and camshaft positions before disassembly, and avoid rotating them after removing the belt to prevent disrupting ignition timing and valve timing.