Funny clacking front right

I’ve recently had a clack in the engine compartment, probably from the front right, on my B4 Avant 2,0. It actually only occurs under load, so if I give gas or drive downhill, switch it back and let it roll (so the engine brakes the box). I’ve already looked for drive cuff, but it’s still quite. The wheel is also bomb-proof (tested in stand and in high-bock condition), so it’s probably not the wheel bearing either. What do I do now?! are either the jacks on the transverse handlebars (which somehow doesn’t harmonize with the clack only if I give gas) or stop the drive shaft. Would it be advisable to change the wheel bearings on suspicion? If so, then it would also be useful to change the transverse handlebar jacks immediately if I had to go to a workshop anyway because of press-in .. or??