What causes the noise in a Tiida?

[OMax]

The abnormal noise from a Tiida's engine is usually from the valves or fuel injectors. The carbon canister solenoid valve can also produce this sound, but it tends to be sharper. To identify the source: slightly rev the engine at idle and observe if the noise frequency changes. If the frequency remains unchanged, it's likely the solenoid valve; if the frequency changes, it's probably valve-related noise. Relevant information about car engines includes: 1. Introduction: A car engine is the power-generating device of a vehicle, serving as its heart and determining its power, fuel efficiency, stability, and environmental performance. Common gasoline and diesel engines are both types of reciprocating piston internal combustion engines. 2. Classification: Based on power sources, car engines can be categorized into diesel engines, gasoline engines, electric motors for electric vehicles, and hybrid systems, among others.