1 fuel injection is little or no oil
(1) the fuel system has air to exclude air in high pressure or low pressure tubing
(2) Baotou Benz accessories injector by grinding or replacement
(3) fuel injection pump is not normal according to the oil pump troubleshooting method to find out the cause of treatment
(4) the replacement of the existing oil leakage of high pressure oil pipe
(5) replace or repair the wear parts of the nozzle
2 low injection pressure
(1) pressure regulating screw loosening required to adjust to the specified pressure, and tighten the lock nut
(2) adjust or replace the pressure regulating spring
(3) the needle stick for cleaning or polishing
(4) the spring seat, the top rod and other parts wear repair or replacement
3 fuel injection pressure is too high
(1) pressure regulating spring high according to the provisions to adjust to the specified pressure, and tighten the lock nut
(2) the needle stick for cleaning or polishing
(3) clean or replace the nozzle orifice plug nozzle (nozzle)
4 fuel injector leakage:
(1) the spring of the pressure regulating spring is replaced by a new spring
(2) the grinding surface of needle valve replacement
(3) after cleaning needle grinding or replacement
(4) the replacement of cap and cap
(5) the abrasion wear or replacement of the injector body in the north of Baotou
5 poor injection atomization:
(1) low injection pressure to the specified pressure
(2) Baotou Benz accessories nozzle seat is damaged or burned grinding or replacement
(3) the fuel injector nozzle fitting surface has the garbage to be cleaned in time
6 injection into line:
(1) the steel wire dredge hole with diameter of 0.2-0.3MM is used for spray hole blockage
(2) the needle valve seat surface is worn to replace the new needle valve body
(3) the needle cleaning by grinding or replacement
7 needle surface burned or bluish black (diesel engine overheat) check the cooling system, and pay attention to the replacement of parts. Diesel engines do not overload for a long time.