Why is the idle noise loud in Haval H6?
2 Answers
The reasons for loud idle noise in Haval H6 are as follows: Incorrect engine oil specification: For example, if fully synthetic oil was used before but now mineral oil is used. Therefore, when changing engine oil, it is essential to go to an authorized shop and use genuine oil. Counterfeit or inferior quality oil can cause significant damage to the engine. Following the oil specification recommended in the maintenance manual is generally safe. Cylinder valve malfunction: When the engine is idling, it makes a tapping sound, as if something is hitting metal. This sound may not be noticeable during acceleration or driving. It could be caused by cylinder valve issues, which can be adjusted to resolve. Low engine oil level or oil pressure: Insufficient engine oil can also cause similar problems, as can low oil pressure. It is necessary to check the engine oil pressure.
I also encountered the issue of increased idle noise when I first drove the Haval H6, and it was quite annoying. I looked into it and found that it might be due to an aging engine lacking oil, which causes louder internal friction sounds. If the exhaust pipe has cracks or loose connections, it can also produce a buzzing noise. A loose or worn-out belt will noticeably increase friction noise. Too much carbon buildup can make the valves work less smoothly, increasing vibration and noise. Even small components like a faulty cooling fan bearing can cause noise. In my case, I noticed the loud noise while waiting at a red light, and it improved significantly after adding new oil. However, I recommend everyone to visit a repair shop for a proper check-up instead of trying to fix it themselves, as delaying could make the problem worse. Regular maintenance, such as checking the belt and oil condition, can help prevent these issues. In short, this is a common problem with the Haval H6, and paying attention to changes in sound can help detect and address it early.
