What are the reasons for abnormal noise from the NANJUN Ruikang engine?
2 Answers
NANJUN Ruikang engine abnormal noise may be caused by aging or loosening of engine mounts, engine misfire noise, excessive rich mixture, etc. Aging or loosening of engine mounts: Engine mounts are the rubber blocks between the engine and the frame. Once these mounts age or become loose, the engine will vibrate, resulting in abnormal noise. Engine misfire noise: Engine misfire mainly refers to one or more cylinders of the engine not working properly. Timing gear noise: After long-term use, coupled with improper gear clearance adjustment and hardening of the timing belt, the gears will experience excessive wear. In severe cases, the gear teeth may even wear out, causing loosening between the meshing gears.
I've driven trucks for ten years, and engine noises are common in light trucks like Nanjun Ruikang. A loose belt will squeak like a mouse; low oil will cause a metallic grinding sound; excessive valve clearance makes the engine sound like a gong; if it's knocking, there's a metallic clinking sound during acceleration. Last week, my truck had this issue—turned out the fuel injector was clogged, causing abnormal combustion, but it was fine after cleaning the carbon deposits. Never ignore small issues with diesel engines, or they’ll turn into costly overhauls and downtime. Best to stop and listen for the source, check oil and belt tension first, then consider removing spark plugs to inspect carbon buildup.
