| Typical noise character | Possible reason |
| Clicking sounds similar to the clicking of a ballpoint pen cap | 1. Loose spark plug |
| 2. Loosely screwed engine components (air conditioning compressor, alternator, power steering pump, etc.) | |
| 3. Loose valve rocker arm | |
| 4. Worn rocker arm pivot post | |
| 5. Fuel pump (broken return spring in mechanical fuel pump) | |
| 6. Worn camshaft | |
| 7. Leak in the exhaust system | |
| 8. Pops (detonation) | |
| Metallic clang | 1. Worn piston pin |
| 2. Burst piston | |
| 3. Excessive thermal clearance in the valve mechanism | |
| 4. Knocking of the camshaft drive chain on the cover | |
| A knock reminiscent of a knock on a door | 1. Lower connecting rod head bearing |
| 2. Main bearing | |
| 3. Thrust bearing | |
| 4. Loosely screwed torque converter | |
| 5. Cracked drive disc | |
| A sound reminiscent of a baby's rattle | 1. Thermal damper |
| 2. Broken vibration damper | |
| 3. Loosely bolted engine components | |
| 4. Loose drive belt or belt tensioner | |
| A clicking sound reminiscent of marbles clicking against each other | 1. Connecting rod lower head bearings 2. Piston pin |
| 3. Loose camshaft drive chain | |
| The howling sound of an electric motor | 1. Alternator bearing |
| 2. Drive belt | |
| 3. Power steering | |
| 4. Noise generated by the belt (aggregate drive or camshaft drive) | |
| A dull thud sound, similar to the sound of a door closing | 1. Engine mount |
| 2. Universal joint of the drive axle cardan shaft or constant velocity joint |
Extraneous noises in the engine (Largus 1)
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This article has been reviewed: Daniil Markelov
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