Applicable scope: Dong Kang Dong Kang L280 20, L300 20, L360 20, Dong Dong Kang Kang, Kang 6LTAA8.9-GM200, L375 20 Dong Dong Kang 6LTAA8.9-GM215 related accessories: working principle of fuel pump bracket: each cylinder fuel injection pressure, increase of diesel, high pressure distribution location: the right side of the fault and analysis of engine piston perforation governor, card lag, high fuel consumption, power shortage analysis: oil air, low pressure oil blockage or leakage, plunger, plunger wear or fracture, the oil valve spring valve bad seal