How we change the actuator of the Hyundai Grand Starex D4CB

Inefficiency of the turbocharger.
Let us consider several types of faults in the low efficiency of the turbine on the example of the Hyundai Grand Starex turbocharger with a D4CB engine. These cars are equipped with a system of pressurization with the so-called variable geometry (VGT), it provides high performance in a large range of engine speeds, which has a positive effect on the dynamics of the car.
And now you have ceased to feel this dynamic, while the car starts and goes! What could happen? On these vehicles, all control of the boost system is carried out by vacuum, which creates a special vacuum pump installed at the rear of the engine on the cylinder head. But with this pump and begin troubles with supercharged control. The first thing to check is whether a vacuum is created by the vacuum pump itself. If it is, then go ahead, if not - the pump needs to be replaced. And believe me - it is very difficult to do without certain skills.
The next step is to check the condition of the vacuum hoses for leaks or leaks. You, of course, do not carry with you such a device as a vacuum gauge, which is used to determine the health of the highway? And not all stations have such a device. If everything is good, and there is a vacuum in all the tubes - we go further, badly - we change tubes.
The third item is the solenoid valve. Here, without the help of a computer or diagnostic equipment, there is nothing special to do. The maximum that you can do on the way is to pick up the tube from the valve to prevent a strong overheating, which can lead to the destruction of the engine.
The fourth point is the failure of the so-called actuator of the turbocharger, which is controlled by the solenoid valve. You can change it yourself, but it can be difficult to set up, especially if you do not have at hand all the necessary equipment and skills for this operation.
Well, the fifth point, the saddest thing - you just died turbine. It is also possible to change, but carefully, because the failure of the turbine may be due to another malfunction. Before replacing the turbine, you need to make sure that all the influencing systems are in good condition.
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