- A) Check for leaks and blockages between the air filter and the air duct, and between the air duct and the cylinder head. Replace defective elements if necessary. Eliminate any leaks in the connections.
2. Check the status of the systems and the absence of:
- deformations of parts;
- foreign objects in the channels;
- cracks.
3. Check boost pressure.
- A) Warm up the engine.
- b) Install a pressure gauge in the gap in the hose connected to the intake manifold.
- V) Disengage the clutch and depress the accelerator pedal sharply. Measure the boost pressure at an engine speed of 5100-5200 rpm. Pressure 0.53-0.67 bar.
If the pressure is less than the regulated one, check the tightness of the intake and exhaust systems. If the systems are normal, replace the turbocharger. If the pressure is more than the regulated one, check the condition of the vacuum hose of the bypass valve drive. If the hose is OK, replace the turbocharger.
4. Check compressor wheel rotation.