Notes

Suction control valve mistake signs and symptoms
The suction control valve is the executive part that regulates the gas amount in the high-pressure common rail, which is managed by ECU. When the Suction control valve falls short, the mistake light will certainly light up.Suction control valve mistake symptomsEngine stallSuction control valve mistake sign oneAfter the suction control valve is harmed because of aging and also other factors, fuel shot can not occur, and the fuel does not flow via the valve core and also straight goes into the high-pressure gas pump, creating the engine to unexpectedly stop.Check: Disconnect the suction control valve to examine whether there is any kind of deformation, clog, and so on. If there is no problem, check the o-ring rubber problem. If the o-ring rubber condition is harmed, you can change it with a new one, and return it to start.Suction control valve fault symptom twoWhen the control line is short-circuited to the ground, the engine will be shut off instantly, and also the engine will certainly be minimal torsion if the rail pressure is too high.Suction control valve mistake symptom threeThe low end of the suction control valve is short-circuited to the ground: the 3.5 V control line is based. Once this control line is short-circuited to the ground, the ECU will certainly not be able to continue to control the suction control valve. Currently, the current of the suction control valve will certainly get to the maximum value, so the generally open suction control valve oil flows will be completely closed, and the lorry will reveal an immediate flameout. The failing phenomenon.Check: Pull out the suction control valve, transform the ignition button to the ON position, and also measure the voltage of the two pins to the ground. Generally, one is 24V and also the various other has to do with 3.3 V. If there is no voltage, the circuit is broken.Plug in the suction control valve, pierce the pin from the backside, gauge the voltage of both pins to the ground, under normal situations, the voltage is 24V, begin the examination, where the drive line need to have to do with 0.3 V. Inspect the resistance of the oil suction control valve, the typical value is 2.6-3.2 ohms.The engine is hard to runSuction control valve fault signs and symptom oneSuction control valve open circuit failure: the high and low ends of the joint are open, or the line plug is not connected in well, and also the call is poor, which will create an open circuit failure. At this time, there is no existing in the suction control valve and also the spindle goes to the optimum oil supply placement; Suction control valve mistake symptom twoSuction control valve short-circuit fault: the premium as well as low-end of the joint are short-circuited. Currently, the suction control valve itself sheds present and the spindle is also at the maximum oil supply position; Suction control valve mistake signs and symptom threeThe luxury of the suction control valve is short-circuited to the ground: At this time, the suction control valve itself will certainly likewise shed current, that is, the suction control valve no more does job, as well as the spindle is also at the optimum gas supply placement; The event of the above three conditions will certainly trigger the stress in the usual rail pipe to be too expensive. Right now, it will certainly create the typical rail pressure limiting valve to open up and also release the stress. Once the common rail pressure restricting valve stops working to open, the engine will certainly be limited in torque, showing a failing sensation of driving weakness.Pressure detection in common rail pipeCheck whether the low-pressure oil circuit is dripping or obstructed (tighten the hoops of all pipelines, check whether there are folds up, whether the fuel container is open to the atmosphere, and whether the submarine pipeline in the fuel tank is obstructed by foreign matter). Examine the gas return volume of the fuel injector. Under regular circumstances, the gas return does not go beyond the metal airplane on the U-shaped card of the fuel injector.Check the fuel shot volume of the fuel injector. You can take the gas injector out and attach it out. If the fuel injector is leaking throughout the startup process, the injector needle valve may be stuck in an open state. Note: For the regular opening as well as shot conditions of the injector, the rail pressure have to be greater than 25M. Inspect whether the oil pump pressure safety valve is stuck in an open state, it can be taken apart as well as cleaned.Suction control valve fault symptom fourIt is really vital to stay clear of the high rail stress caused by the sticking of the spindle. It is essential to make use of qualified gas oil and also diesel filter.The spool is stuck. For example, when the automobile is slowing down and going downhill, the engine will enter the deceleration cut-off setting, that is, it will certainly remove the gas supply of the injector, as well as the suction control valve solenoid valve must be entirely closed right now to stop the oil stress in the typical rail pipe from constantly boosting. Nevertheless, if the valve core in the suction control valve is stuck at this time, the fuel will certainly remain to get in the typical rail pipeline, as well as the oil stress will certainly remain to increase, triggering the pressure restricting valve to be forcibly opened up, and also the engine enters the defense state. When the rate is limited, it will certainly also show the sensation of driving weakness.The inner valve core of the gas suction control valve is stuck or put on prematurely. A lot of it is caused by excessive contaminations in the fuel. For john deere suction control valve , along with refueling at a regular filling station, you should additionally make use of a qualified diesel filter to guarantee yourself The components on the vehicle can be used for a much longer life.Severe idlingThe continuous opening time is too long and the system pressure is too expensive, which will certainly cause the engine to go into the reliable mode, in which the engine power is limited. At the same time, driving weakness occurs.If the Suction control valve fails, change it in time. Inferior Suction control valve has a much shorter service life and also inadequate use effect. When it comes across inferior diesel, it may crash quickly. When there is an issue with the suction control valve, exactly how to detect the trouble with the suction control valve and also whether it requires to be changed in time.


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