1, Before installing the fuel injection pump, all parts of the fuel injection pump should be cleaned to prevent dirt and impurities from entering the pump body during installation, resulting in early wear of the parts. At the same time should also pay special attention to the plunger sleeve with the oil pump body can not have metal shavings, sand and cotton yarn and other debris, to prevent oil spills and damaged parts. 2, plunger sleeve cut can not be installed anti. Once installed plunger sleeve, plunger sleeve set screw to withstand the oil into the hole, plunger stroke into the work, back to the oil only by oil return hole, into the small amount of oil back and slow, affecting the normal ignition of the engine combustion . 3, the positioning screws and gasket installation should meet the requirements: (1) plunger sleeve set screws should meet the requirements, not too long, otherwise it will make the plunger sleeve in the pump body is top crooked, affecting the flexible movement of the plunger in the sleeve , Accelerate parts wear, but also make the screw and back to the oil hole clearance is too small, or even block the back hole, can not be timely oil, causing the engine "speed." (2) The plunger sleeve set screw should not be tightened too much, otherwise the sleeve will deform and jam the plunger. The installation requirements are: not installed in the oil valve seat, tighten the set screw, the plunger sleeve in the pump body can move up and down a small distance, but does not produce rotation. (3) must not leak the copper washer screws, and to ensure good sealing here, otherwise it will cause serious oil spills, but also lead to air into the fuel pump, the engine running instability. 4, the valve seat gasket shall not be missing, damaged, and require smoothing: (1) the valve seat of the high-pressure sealed copper mats and low pressure seal rubber mats, pre-installed must be carefully inspected, required intact, not to be missed Installed, otherwise it will cause high pressure oil chamber and low pressure oil chamber connected, resulting in the pump can not work properly. (2) When installing the outlet valve tightly, the tightening torque must be moderate. Tighten the plunger to ensure that any position within the sleeve can be flexible movement, does not produce local arrest phenomenon. (3) gasket must be flat. If the gasket is uneven or wrinkled, the oil valve seat tight tighten the plunger sleeve easy unilateral force to accelerate the plunger parts wear. 5, according to the requirements, properly adjust the fuel supply advance angle.