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Suction control valve mistake signs
The suction control valve is the executive component that manages the fuel amount in the high-pressure common rail, which is managed by ECU. When the Suction control valve fails, the mistake light will certainly 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 shot can not take place, and the fuel does not move via the valve core as well as straight goes into the high-pressure fuel pump, creating the engine to unexpectedly stop.Check: Unplug the suction control valve to inspect whether there is any kind of deformation, clog, etc. If there is not a problem, check the o-ring rubber condition. If RE530337 -ring rubber condition is damaged, you can replace it with a new one, and return it to start.Suction control valve mistake sign twoWhen the control line is short-circuited to the ground, the engine will be switched off instantaneously, and also the engine will be restricted torsion if the rail stress is also high.Suction control valve mistake symptom threeThe reduced end of the suction control valve is short-circuited to the ground: the 3.5 V control line is grounded. As soon as this control line is short-circuited to the ground, the ECU will certainly not have the ability to continue to control the suction control valve. Right now, the current of the suction control valve will reach the optimum worth, so the normally open suction control valve oil passages will be totally closed, as well as the automobile will certainly reveal an immediate flameout. The failing phenomenon.Check: Pull out the suction control valve, transform the ignition switch to the ON position, and determine the voltage of the two pins to the ground. Usually, one is 24V and also the other is about 3.3 V. If there is no voltage, the circuit is broken.Plug in the suction control valve, pierce the pin from the back end, determine the voltage of both pins to the ground, under regular conditions, the voltage is 24V, begin the test, where the drive line ought to have to do with 0.3 V. Check the resistance of the oil suction control valve, the regular value is 2.6-3.2 ohms.The engine is hard to runSuction control valve mistake sign 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, as well as the call is poor, which will certainly create an open circuit failure. Currently, there is no current in the suction control valve as well as the spool is at the maximum oil supply placement; Suction control valve mistake symptom twoSuction control valve short-circuit mistake: the premium and low-end of the joint are short-circuited. Currently, the suction control valve itself loses existing and the spindle is likewise at the maximum oil supply placement; Suction control valve mistake signs and symptom threeThe high-end of the suction control valve is short-circuited to the ground: Currently, the suction control valve itself will certainly also lose existing, that is, the suction control valve no longer does work, and the spindle is likewise at the maximum fuel supply setting; The incident of the above 3 problems will cause the stress in the common rail pipe to be too expensive. Right now, it will trigger the common rail stress limiting valve to open up and release the stress. Once the typical rail pressure restricting valve falls short to open up, the engine will be restricted in torque, showing a failing sensation of driving weakness.Pressure detection alike rail pipeCheck whether the low-pressure oil circuit is dripping or obstructed (tighten the hoops of all pipes, check whether there are folds up, whether the gas storage tank is open to the ambience, as well as whether the submarine pipe in the gas container is obstructed by contaminant). Inspect the gas return quantity of the gas injector. Under regular conditions, the fuel return does not go beyond the steel aircraft on the U-shaped card of the gas injector.Check the gas injection volume of the fuel injector. You can take the gas injector out as well as attach it out. If the gas injector is trickling during the startup procedure, the injector needle valve might be embeded an open state. Keep in mind: For the normal opening and also injection conditions of the injector, the rail stress need to be above 25M. Inspect whether the oil pump pressure safety valve is stuck in an open state, it can be taken apart and also cleaned.Suction control valve mistake symptom fourIt is extremely crucial to avoid the high rail stress caused by the sticking of the spool. It is very important to use competent gas oil and also diesel filter.The spool is stuck. For instance, when the vehicle is decreasing and declining, the engine will certainly get in the slowdown cut-off setting, that is, it will remove the fuel supply of the injector, and the suction control valve solenoid valve ought to be completely shut at this time to avoid the oil stress in the common rail pipe from continually raising. Nevertheless, if the valve core in the suction control valve is stuck at this time around, the gas will certainly remain to go into the typical rail pipe, as well as the oil pressure will continue to climb, triggering the stress limiting valve to be by force opened up, as well as the engine goes into the defense state. When the speed is restricted, it will certainly additionally reveal the sensation of driving weakness.The internal valve core of the fuel suction control valve is stuck or used too soon. Most of it is caused by excessive impurities in the gas. Consequently, along with refueling at a normal gasoline station, you need to additionally utilize a certified diesel filter to ensure on your own The parts on the lorry can be utilized for a much longer life.Severe idlingThe constant opening time is too long as well as the system pressure is expensive, which will trigger the engine to enter the sound mode, in which the engine power is restricted. At the same time, driving weakness occurs.If the Suction control valve stops working, change it in time. Inferior Suction control valve has a shorter life span and poor usage effect. When it encounters inferior diesel, it may collapse immediately. When there is a trouble with the suction control valve, exactly how to find the issue with the suction control valve and whether it requires to be replaced in time.


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