[GrahamBrown1]

The ball the arm connects to will be worn. There is a Volvo kit that involves pinning it together but is fiddly to fit but doable. It is normally the joint on the swirl flap assembly that wears rather than the motor end.

The oil leak will be from around the where the assembly slots into the head. The complete fix is removal of the cam cover and a new flap assembly. It is DIY but the bits arnt the cheapest with the various gaskets injector seals etc. In an ideal world you would replace the injector clamps as they are only single use and the fuel lines but many re use without issue. Plenty of info on YouTube to show the repair. The P2 euro 4 cars suffered with this a lot. Thankfully they don’t break up and wreck the engine like on some other makes tho. More on this point, there are aftermarket kits on the internet that are much cheaper, I personally wouldn’t bother. It’s a lot of work to do again and there quality is unknown. If one was to come apart……. All the genuine Volvo bits including the fuel lines ext came to about £600 last time I looked.