The engine low speed is good, but the acceleration speed can not always rise, driving weakness, which is due to lack of cycle fuel supply.

⑴ reason

① improper adjustment of fuel injection pump, so that reduced fuel supply.

② governor spring due to fatigue and lower elasticity. When the throttle in the end, the oil adjustment lever can not move to the head, resulting in reduced fuel pump fuel supply, the engine can not reach the rated speed.

③ Baotou North North heavy truck accessories plunger and sleeve, injector needle and needle valve body serious wear and tear, so that when the oil pump oil leakage increased, the relative reduction in oil supply.

④ throttle control lever adjustment improper, or throttle pedal soldout, so that the accelerator pedal can not be in place, resulting in full load of oil is too small.

⑤ There is air in the oil.

⑵ diagnosis and treatment methods

When the engine power is insufficient, if the low speed is good, and the smoke is normal, indicating that the engine is burning well, that is, good quality diesel fuel injection, oil supply time is normal, the cylinder seal is good and adequate intake.

① in the case of normal low-pressure oil, the first should see Baotou North Ben heavy truck accessories throttle pedal connecting pin loose and the length of the connection rod adjustment is appropriate. When the throttle is in the bottom and the governor arm is in the maximum position, the high speed limit screw should be brought into contact with the stop block. Otherwise it should be adjusted.

② Baotou North North heavy truck accessories discharge the air in the oil.

③ In the fuel injection pump test bench debugging fuel injection pump, so that the fault can be ruled out.