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Weichai power generation unit injector the cause of the common failures and troubleshooting methods
Update:2017-02-27 Tags:pressure

1. The weichai generatorpower generation unit injector fuel injection spray little or not out of the oil

1) there is air fuel oil system, eliminate high pressure or low pressure oil pipe of the air;

2) killed diesel injector nozzle, sharpening or replacement;

3) the fuel injection pump oil is not normal, according to the fuel injection pump troubleshooting method to figure out why;

4) high pressure oil pipe leakage, tighten the nut, the tubing for cracks should be replaced;

5) wear of diesel injector nozzle, replace or grinding;

2. The weichai power generation unit injector fuel injection pressure is low

1) pressure regulating screw loosening, according to the provisions to readjust to pressure, and twist lock nut;

2) pressure regulating spring deformation, adjustment or replacement;

3) needle valve stick, cleaning and grinding;

4) spring seat, plunger wear parts, repair or replacement;

3. The weichai power generation unit injector fuel injection pressure is too high

1) high pressure regulating spring force, according to the provisions to readjust to pressure, and twist lock nut;

2) needle valve stick, cleaning and grinding;

3) nozzle clogging, cleaning the injection hole or replacement nozzle (nozzle);

4. The fuel injector oil:

1) pressure regulating spring fracture, replace the new spring;

2) needle body abrasive surface is damaged, replace;

3) needle valve killed, cleaning the sharpening or replacement;

4) tight cap line, replacement;

5) the injector body surface wear, sharpening or replacement;

5. Weichai power generation unit injector fuel injection spray bad:

1) low injection pressure, pressure adjustment to regulation;

2) the nozzle surface damage or burn, sharpening or replacement;

3) the mating surface of diesel injector nozzle is rubbish, timely cleaning;

6. Weichai power generation unit injector fuel injection into line

1) nozzle clogging, with a diameter of 0, weichai diesel generator set price. 2-0.3 MM wire dredge orifice;

2) needle valve seat surface excessive wear, replace the needle valve;

3) needle valve bite dead, cleaning sharpening or replacement;

7. The surface of the needle valve damage or show blue-black (diesel engine overheat) check the cooling system, and pay attention to the change of matching parts. Diesel engine don't long time overload running.

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