[DarkPira7e]

After my experience with this, I would take the intake cam gears off and see if either of the spring loaded oil pressure regulator doors have come loose. I was chasing this for a while on mine. Upon my rebuild, I discovered that one of my intake cams had come apart internally. The small door is pinched in place and shouldn't be loose- if it comes loose, you cannot repair it, and it will not hold the spring or oil pressure the way it is supposed to. This causes VVT issues.