Poor braking effect. Such faults greatly reduce the safety and comfort of the whole vehicle. After the user replaces the wheel hub, rim, brake, brake shoe and other components, the fault still exists.
Until the engine stops due to cylinder tamping. The local maintenance station generally said that this phenomenon was caused by the product quality problem of the piston
After the engine is disassembled, there are a large number of hard carbon deposits on the top of the piston between the two inlet and exhaust valves; According to the customer's understanding, the damage forms of the six pistons of this engine are basically the same. The ring height and radial thickness of the first piston ring are seriously worn.
which will lead to poor combustion preparation conditions and prolonged ignition time, resulting in increased pressure rise rate and rough operation in rapid combustion period.
Fuel oil is hydrocarbon. If it is burned under anoxic conditions, it will cause incomplete combustion, so that part of the carbon elements that cannot be completely burned will form free carbon, and the mixed exhaust gas will become black smoke.
