What Causes the Zizzing Sound When Accelerating?

[McHannah]

The zizzing sound when accelerating may be caused by: noise from the fuel pump or related components, or possibly a damaged clutch release bearing. Solutions for the zizzing sound when accelerating are as follows: 1. Air leaks or looseness: To completely resolve the issue, check for air leaks in the engine's intake pipes, ensure the air filter is properly installed, identify the source of the sound, and check if the engine belt is aged, loose, or slipping. 2. The location of the zizzing sound matters: If it's on the right side of the engine, it's usually the generator belt; on the left side, it could be an issue with the throttle body; for the front wheels, the brake pads might be the main cause, often due to the brake caliper, with minor cases caused by partial jamming. This could result from damage to the brake caliper piston when it was pressed back during installation, leading to a certain degree of jamming.