I recently picked up a 2002 Outback 2.5, 149000 miles
On cold startup and hot startup (after the car sets for 20-30 minutes) I hear a fairly loud clattering sound coming from the passenger side of the engine. The clatter stops after a few seconds, like after it builds oil pressure? What componet would cause this on a OHC engine? I dont believe it to be a piston/ rod issue, noise is coming from the head.
Any help would be appreciated