Why is the engine still making noise after parking and turning off?
1 Answers
This is a normal phenomenon designed to prevent the engine from "seizing up" due to rapid cooling after shutdown. Here's an explanation of why the engine may still make noise after turning off: 1. After driving for a period, various engine components reach high temperatures. If parked immediately, moving parts like cylinders and piston rings, or crankshafts and connecting rods may "stick" together due to excessive heat. 2. This could lead to tightness during the next startup, commonly referred to as "cylinder seizure or bearing failure". After prolonged driving, it's recommended to let the vehicle idle for a few minutes before shutting down, allowing the engine temperature to decrease naturally.