Does a small part falling into the engine compartment have any impact?

[LaJosie]

A small part falling into the engine compartment has minimal impact. Below is relevant information about engines: Introduction: An engine is a machine capable of converting non-mechanical energy into mechanical energy. Classification: Includes internal combustion engines (reciprocating piston engines), external combustion engines (such as Stirling engines, steam engines, etc.), jet engines, electric motors, etc. External combustion engine: An external combustion engine means that the fuel burns outside the engine. Internal combustion engine: An internal combustion engine, or reciprocating piston engine, differs most from external combustion engines in that the fuel burns inside it. There are many types of internal combustion engines, with common gasoline and diesel engines being typical examples.

[OHope]

I've been in the auto repair business for over a decade, and the issue of small parts falling into the engine compartment is nothing to take lightly. The engine bay is full of moving components like belts, fan impellers, and high-speed rotating parts such as the crankshaft. If a small metal part gets lodged in there, at best it can wear down components, and at worst it could completely destroy the engine. For example, if a screw falls into the fan area, the rotating fan can hit it, creating a loud screeching noise, and over time, it can break the fan blades. The flying debris might also damage other parts. Additionally, if a part lands near electrical wiring, such as close to the spark plugs or battery terminals, it could cause a short circuit or even a fire—this is no joke. So if this happens, shut off the engine immediately and avoid moving it. It's best to use a flashlight to carefully inspect under the hood. If you can't find it, take it to a repair shop and let a professional technician use an endoscope or air blower to clean it out. Always keep your tools away from the engine area when working, and developing good habits is the easiest way to avoid trouble.