What causes the abnormal noise in Geely Vision X6?

[Sean]

Geely Vision X6 has abnormal noise due to crankshaft bearing and connecting rod bearing issues. Connecting rod bearing noise: Loose bolts securing the main or connecting rod bearings; Excessive clearance in main or connecting rod bearings; Poor lubrication or burnt main/connecting rod bearings; When oil pressure is too low or oil level is insufficient, connecting rod bearings are particularly prone to burning out at high engine speeds, while main bearings burn out less frequently; When the clearance between the shaft and bearing is too large, burning is more likely to occur than when the clearance is smaller; Therefore, during engine overhaul, proper clearance should be maintained between the shaft and bearing, but it must not be excessive. Crankshaft bearing: The abnormal noise caused by piston side impact on cylinder walls generally occurs when the direction of axial force on the piston top changes as the piston transitions from compression stroke to power stroke, resulting in piston slap noise. In other words, each time the piston passes top dead center and moves downward, it is forced to impact the cylinder wall, causing piston slap issues.