What causes the rattling noise on the right side of GAC Trumpchi GS4?
1 Answers
There are many potential causes for vehicle rattling noises, each requiring specific analysis. Relationship between noise and engine RPM: Noise occurs only at idle or low speeds. Possible causes include: excessive clearance between piston and cylinder wall; overly tight piston pin or connecting rod bearing assembly; excessive clearance between tappet and guide hole; worn camshaft lobe profile. Relationship between noise and load: Many engine noises are clearly related to load. During diagnosis, you can test by progressively removing cylinder loads, typically using single-cylinder or dual-cylinder misfire methods to isolate one or two cylinders, thereby identifying the relationship between noise and load.