V40 2004 1.6 Engine rattles

Servus, today got a well-preserved V40 Model 2004 for my girlfriend, the car stands well there, and I paid it very little, but with few small defects. The worst lack is a rattling (no rustling) in engine, sounds like the valves to the noise is there when the engine is cold and warm, in the upper speed range the noise is gone. The engine jumps without any problems also takes on the gas. Motor 1.6l 109 ps mileage 140t my guess is currently the camshaft adjuster. have not got the car at the moment here the dealer brings it by the week with the trailer. MfG Matthias