What causes the loud engine noise in a Polo?
1 Answers
If the vehicle exhibits a ticking noise during the transition from cold to warm engine state, lasting about 3 minutes, this is not an issue. It is caused by large valve clearance when cold and poor lubrication. Possible causes include slight detonation, mild piston slap, stuck piston rings, or cylinder wall issues, which should be checked by an experienced technician. Additional information: If there are other unusual noises, the situation becomes more complex and varied. Some parts may produce abnormal sounds when faulty, such as the water pump, belt tensioner, ignition coil leakage, intake or exhaust leaks, or loose screws, which can also cause noise. Therefore, if the engine noise seems louder, it is best to have it inspected at a professional repair shop.