Will Timing Chain Skipping Teeth Definitely Cause Valve Interference?
1 Answers
Timing chain skipping teeth does not necessarily cause valve interference. Methods to determine if valve interference occurs due to timing chain skipping: 1. Abnormal sounds: When the car is idling, there are slight noises; at medium speed, the noises become obvious; at high speed, the noises become chaotic or disappear; when accelerating sharply, the noises reappear, and in severe cases, the timing gear cover vibrates. This indicates excessive timing gear meshing clearance. 2. After major repairs or timing gear replacement: Continuous noises occur, with louder noises at higher speeds, especially noticeable during sharp acceleration. This indicates insufficient timing gear meshing clearance. 3. Rhythmic noises can be heard at idle: The noises increase with rising speed. This indicates uneven timing gear meshing. 4. Clear, rhythmic metal knocking sounds at idle: The noises worsen with increasing speed. This indicates axial displacement of the timing gear or damage to individual gear teeth.