Ok.will use the inspection camera on both the intake valves and spark plug holes.

An aside, the car hasn't been started for about 2 months. Battery has been disconnected. I there anything I should do about this?

__________________
02' X5 E53 3.0i Petrol (210k km/130k miles)
Will trade coding skills (Javascript, React, Node, Django, Mobile dev) for car knowledge
ODB II: ELM 327 (Torque Pro app)