Mainly producing and selling CR injectors, nozzles, control valves, valve bonnets, CRIN repair kits, injector adjusting shims, common rail injector testers and repair tools. Besides our own brand "HAOTENG" and "DYD", we are also the sole agent of UK ERIKC (the former OEM factory of famous international brand common rail Parts).
Injector FAQ
FAQ: What are the common problems with fuel injectors? Injector and cylinder head coupling hole leakage oil
ERIKC Answer: When the injector is equipped with the cylinder head, the carbon deposit in the mounting hole should be carefully removed. The copper gasket must be flat and must not be replaced with an asbestos plate or other materials to prevent poor heat dissipation or sealing effect. If self-made copper washers are used, the copper must be machined to a specified thickness to ensure that the distance from the injector to the plane of the cylinder head meets the technical requirements. For example, the distance of the 135 series diesel engine is 1.5 to 2 mm, too large and small will affect the cylinder compression ratio. In addition, the concave shape of the fuel injector pressure plate should be installed downwards. Avoid unilateral bias when tightening. Tighten evenly according to the specified torque. Otherwise, the injector head will deform due to deflection and cause air leakage.
FAQ: What are the common problems with fuel injectors? Needle valve and needle valve guide surface wear
ERIKC Answer: Frequent reciprocating movement of the needle valve in the needle valve hole, combined with the intrusion of impurities in the diesel fuel, will gradually wear the guide surface of the needle valve hole. As a result, the clearance increases or a nick is formed, resulting in increased internal leakage of the injector. The pressure is reduced, the injection quantity is reduced, and the injection time lags behind, causing the diesel engine to start difficult.
Solution: When the fuel injection time delay is too long, the locomotive cannot even operate. In this case, replace the needle valve assembly.
