1. Starter Motor Issues: The starter motor may be faulty or damaged. When you turn the key or press the start button, the starter motor engages with the flywheel to start the engine. If the starter motor is not functioning properly, it may produce clanking noises due to a damaged gear or other internal issues.
2. Loose or Damaged Flywheel: The flywheel is a large, heavy wheel connected to the crankshaft of the engine. When the starter motor engages with the flywheel, it turns the engine. If the flywheel is loose, it may produce a clanking or grinding sound because the starter motor is not able to engage properly. Damage to the flywheel teeth can also cause similar noises.
3. Faulty Bendix Gear: The Bendix gear is part of the starter motor and it engages with the flywheel. If the Bendix gear is damaged or worn out, it can produce clanking noises because it doesn't mesh smoothly with the flywheel teeth.
4. Worn-Out Engine Mounts: Engine mounts are responsible for holding the engine in place and reducing vibrations. If they are worn out or damaged, the engine may move excessively when you try to start it. This movement can cause the starter motor to hit other components, resulting in clanking sounds.
5. Low Oil Pressure: Insufficient oil pressure can also lead to clanking noises. When the oil pressure is too low, the moving parts in the engine, including the starter motor and its gears, may not receive adequate lubrication. This can lead to metal-on-metal contact and clanking sounds.
6. Broken Engine Internal Parts: In rare cases, a loud clanking noise could be caused by major engine internal issues. For example, a broken connecting rod or piston could produce such sounds.
If you hear loud clanking noises when starting your car but it doesn't turn over, it is advisable to have it checked by a qualified mechanic to accurately identify the underlying issue and get it repaired promptly.
