Diesel noise when the engine starts after parking.

After a run of 40,000 km the diesel noise began to appear at the start of the engine.The dealer said that everything is fine. But such a problem is present in the absence of engine oil in the system. Because of what the clutch of VVT-I makes a noise. I watched a bunch of decisions. Change the oil pump and this clutch, but the problem is solved temporarily. Through a certain mileage comes back. What should I do?

The same symptoms appear after leaving the underground parking. When you leave on electric traction, and then the motor starts. And at this moment you go to the hill 30 degrees.

The problem is not regular

 

I sorted it out, everything is clean.