Leaderboard

Sorry, but I will not download anything from untrusted sources. Can you describe the noise instead? Rattle, rumble, squeak, knock, ring, grind, for example. Weird tells us nothing.

I'd recommend you speak to an auto locksmith. If you go to Audi you'll be charged a fortune

Hi strip the rocker cover offend look for cam followers in the cam housing they will fly off if they meet excessive force in the opposite direction [the pistons] you will have to remove the injectors to do this, if there is nothing obvious get a remotely lit camera, cheap on line and inspect the top of the pistons through the injector port any marks will indicate collision with the valves, now lies the conundrum, no rockers moved, no piston marks, the only way you can test compression is to fit a new timing kit, but you may well find a valve has a slight bend [not sealing] or one of the camshaft lobes has twisted on its shaft, this is quite common as the lobes are sweated on to the shaft. Steve.