Troubleshooting method of electronically controlled fuel injector

What are the troubleshooting methods for electronically controlled fuel injectors? Electronic injector seal manufacturers for you to introduce it:

1. Little or no oil spray:

(1) there is air in the oil circuit of the fuel system to expel air from the high-pressure or low-pressure oil pipes

(2) even parts of the nozzle bite hard for grinding or replacement

(3) abnormal oil supply of the injection pump shall be treated according to the troubleshooting method of the injection pump

(4) if oil leakage occurs in the high-pressure oil pipe, tighten the nut and replace the oil pipe with cracks

(5) fuel injection nozzle coupling wear replacement or grinding

2. Low injection pressure:

(1) the pressure regulating screw is loosened and adjusted to the specified pressure according to the regulations, and the locking nut is tightened

(2) pressure regulating spring deformation adjustment or replacement

(3) needle valve stuck cleaning or grinding

(4) spring seat, rod and other parts wear repair or replacement

3. Too high injection pressure:

(1) the high elastic force of the pressure regulating spring is adjusted to the specified pressure according to the regulations, and the locking nut is tightened.

(2) needle valve sticking, cleaning or grinding.

(3) plug the nozzle to clean the nozzle or replace the nozzle (nozzle).

4. Oil injector leakage:

(1) the pressure regulating spring is broken and replaced with a new spring

(2) needle valve seat surface damaged replacement

(3) needle valve bite dead cleaning, grinding or replacement

(4) replace the tight cap

(5) the plane wear of the fuel injector body should be repaired or replaced

5. Poor atomization of oil spray:

(1) low injection pressure, adjust to the specified pressure.

(2) nozzle seat surface damaged or burned, grinding or replacement.

(3) if there is garbage on the matching surface of fuel injection nozzle, clean it in time.

6. Oil injection line:

(1) steel wire with diameter of 0.2-0.3mm shall be used to dredge the nozzle hole for the plugging of the nozzle hole.

(2) needle valve body surface excessive wear replacement of a new needle valve body.

(3) needle valve bite off cleaning, grinding or replacement.

7, needle valve surface burnt or blue black (diesel engine overheating) to check the cooling system, and pay attention to replace the couple. Diesel engines should not be overloaded for long periods of time.