Suction control valve fault signs

The suction control valve is the executive component that regulates the fuel amount in the high-pressure common rail, which is controlled by ECU. When the Suction control valve falls short, the fault light will light up.Suction control valve mistake symptomsEngine stallSuction control valve mistake signs and symptom oneAfter the suction control valve is harmed as a result of aging and also various other factors, gas injection can not happen, and the fuel does not stream via the valve core and also directly gets in the high-pressure fuel pump, causing the engine to unexpectedly stop.Check: Unplug the suction control valve to examine whether there is any kind of deformation, blockage, and so on. If there is no worry, check the o-ring rubber problem. If the o-ring rubber problem is damaged, you can change it with a brand-new one, and reinsert it to start.Suction control valve fault symptom twoWhen the control line is short-circuited to the ground, the engine will be turned off instantaneously, and the engine will be minimal torsion if the rail stress is also high.Suction control valve fault signs and symptom threeThe reduced end of the suction control valve is short-circuited to the ground: the 3.5 V control line is grounded. When this control line is short-circuited to the ground, the ECU will not have the ability to remain to control the suction control valve. Right now, the current of the suction control valve will get to the optimum value, so the typically open suction control valve oil passages will certainly be completely closed, and the car will reveal an instantaneous flameout. The failing phenomenon.Check: Take out the suction control valve, transform the ignition button to the ON placement, and gauge the voltage of both pins to the ground. Typically, one is 24V as well as the other has to do with 3.3 V. If there is no voltage, the circuit is broken.Plug in the suction control valve, puncture the pin from the backside, determine the voltage of both pins to the ground, under regular situations, the voltage is 24V, begin the test, where the drive line should have to do with 0.3 V. Examine the resistance of the oil suction control valve, the typical worth is 2.6-3.2 ohms.The engine is difficult to runSuction control valve mistake sign oneSuction control valve open circuit failing: the low and high ends of the joint are open, or the line plug is not connected in well, and the get in touch with is poor, which will create an open circuit failure. At this time, there is no existing in the suction control valve and the spindle is at the maximum oil supply placement; Suction control valve fault sign twoSuction control valve short-circuit fault: the premium and low-end of the joint are short-circuited. At this time, the suction control valve itself sheds current as well as the spindle is also at the maximum oil supply placement; Suction control valve fault sign threeThe high-end of the suction control valve is short-circuited to the ground: Currently, the suction control valve itself will certainly likewise lose present, that is, the suction control valve no more does job, and the spool is likewise at the optimum gas supply setting; The occurrence of the above 3 problems will create the pressure in the common rail pipeline to be expensive. Right now, it will certainly trigger the common rail stress limiting valve to open up as well as launch the stress. Once the common rail pressure limiting valve falls short to open, the engine will be restricted in torque, showing a failure sensation of driving weakness.Pressure detection in common rail pipeCheck whether the low-pressure oil circuit is leaking or obstructed (tighten up the hoops of all pipelines, inspect whether there are folds, whether the gas storage tank is open to the atmosphere, as well as whether the submarine pipe in the fuel container is obstructed by foreign matter). Inspect the gas return volume of the fuel injector. Under normal situations, the fuel return does not go beyond the metal aircraft on the U-shaped card of the fuel injector.Check the fuel injection quantity of the fuel injector. You can take the fuel injector out and attach it out. If the gas injector is trickling during the startup process, the injector needle valve might be embeded an open state. Note: For the regular opening as well as injection conditions of the injector, the rail pressure must be above 25M. Inspect whether the oil pump stress safety valve is embeded an open state, it can be disassembled and also cleaned.Suction control valve mistake symptom fourIt is very essential to prevent the high rail stress caused by the sticking of the spool.  john deere suction control valve  is essential to make use of professional fuel oil and also diesel filter.The spool is stuck. As an example, when the vehicle is slowing down as well as worsening, the engine will go into the deceleration cut-off setting, that is, it will remove the fuel supply of the injector, and the suction control valve solenoid valve must be totally closed currently to prevent the oil stress in the common rail pipeline from constantly increasing. However, if the valve core in the suction control valve is stuck at this moment, the fuel will certainly continue to go into the common rail pipeline, and the oil stress will certainly continue to rise, triggering the pressure limiting valve to be forcibly opened, as well as the engine enters the defense state. When the rate is limited, it will certainly also reveal the phenomenon of driving weakness.The inner valve core of the gas suction control valve is stuck or worn prematurely. Most of it is brought on by excessive pollutants in the gas. Consequently, in addition to refueling at a regular gasoline station, you should also make use of a qualified diesel filter to guarantee yourself The parts on the car can be utilized for a longer life.Severe idlingThe continual opening time is also long and also the system stress is expensive, which will create the engine to get in the sure mode, in which the engine power is limited. At the same time, driving weakness occurs.If the Suction control valve falls short, change it in time. Inferior Suction control valve has a much shorter service life and inadequate use effect. When it runs into inferior diesel, it might collapse instantly. When there is a trouble with the suction control valve, exactly how to spot the issue with the suction control valve and also whether it requires to be changed in time.