Another patient came into my garage over the weekend (couple of weeks ago it was my sisters Zafira that had broken a piston). This time it was my nephews Civic Type-R. A couple of days ago it had made a loud screeching noise on startup. The engine was quickly stopped. Upon restarting (rather reluctantly) there was no noise at all and everything seemed to be fine. After discussing the sound with my nephew (eliminated water pump sound, clutch release bearing sound etc) and also given the fact that it thrown a CEL a few weeks ago which indicated cam position sensor range error, we decide not to take any risks and to look into the issue further at the weekend. I was fearing a spun bearing or similar but decided to have a look at the top end of the engine first. As soon as we took off the cam cover we could immediately saw what the issue was :- Compare that to the inlet side :- All this was due to the fact that the bolt on the far side of the cam holder had worked its way loose !!