Guys i have the rattle since i adjusted the valve clearence according to service manual.
Before that i had not rattling.
My valve clearence before adjustment were 0.08 - 0.15.
Another solution is the oil grade. I will definitely use a different oil grade in the next oil change. I will go for 15W-50 because Greece is very hot country. So the more ambient temperature the more rattle the motor reproduce.
I think the solution is:
1. Oil grade 15W-50 semi synthetic
2. Valve clearence 0.08 - 0.13
Regards.