What Causes the Ticking Noise in Wuling Hongguang Mini?
3 Answers
Wuling Hongguang Mini Ticking Noise Causes: Valve Noise: After starting the engine, the "ticking" sound is from the valves, especially noticeable when the engine is cold. This happens because the oil pressure hasn't built up yet, and the valves aren't properly lubricated. The noise should subside after a short while. Insufficient Lubrication: Most cars experience slightly louder engine noise during cold starts compared to when the engine is warm. As long as the sound is uniform and smooth, not harsh, it's normal. This noise occurs because the gap between the cylinder wall and piston hasn't reached the optimal size during cold starts, and the oil lubrication isn't fully effective. Typically, when the engine block temperature reaches around 95 degrees, the sound will return to normal. Oil Issues: Using low-quality oil, not changing the oil for an extended period, or low oil levels can increase friction between the valves and guides, as well as in components like hydraulic lifters, making various engine noises more pronounced.
I've been driving for over a decade and have encountered similar clicking noises, which are quite common in the Wuling Hongguang MINI. The sound usually comes from unbalanced tires, especially when the front tires have uneven wear, causing a clicking noise at high speeds. It could also be an issue with the suspension system, such as worn shock absorbers or loose linkages, which make noise on bumpy roads. In terms of the powertrain, since it's an electric vehicle, a loose motor belt or lack of lubrication in the bearings can also cause this sound. Interior components like loose door panels or seat buckles can also produce clicking noises. I've fixed this before, so I recommend doing a simple check of tire pressure and balance first. If there's no improvement, take it to a repair shop for a full diagnosis—don't delay, as it could affect driving safety. During regular maintenance, pay extra attention to these components and replace wear-prone parts periodically.
As someone who frequently tinkers with car electronics, I believe the rattling sounds in the Wuling Hongguang MINI are mostly related to its electric drive system. For example, when the cooling fan blades of the motor become unbalanced, they can produce a rattling noise at high speeds, or loose connecting bolts in the battery pack can cause mechanical vibrations. Worn suspension bushings can also create rattling sounds on bumpy roads. If the car still makes noise when parked in a quiet place, it's likely due to loose small components, such as friction between plastic parts in the glove compartment or under the steering wheel. I recommend recording the sound with a phone and sending it to a professional mechanic for analysis to avoid unnecessary disassembly. Such noises in electric vehicles are not only annoying but could also affect the lifespan of the battery pack, so early detection is crucial to prevent them from escalating into major faults. Remember to regularly clean the underside of the car to reduce dust and wear.
