I am trying to diagnose and increase in noise when driving. I am still not sure if it is engine or drive line related. I read through the Trabant buying guide posted on the forums and have tried to check for small end bearing wear. After taking out the plugs I rotated the engine and checked each piston in turn. If I move the piston in the cylinder nearest to the gearbox up and down around TDC so that the piston has just started to go down, and then push down on it using a piece of metal bar I get a small "click" sound. I cannot feel any movement I just hear a click. I checked that the bar was hard up against the piston before pushing down to eliminate the possibility of the click coming from the contact between bar and piston. The click seems to come from the top of the engine. The piston in the other cylinder does not produce any noise. Am I right in assuming that the one cylinder has some small end wear? Or is a little click normal?