K series strikes again, hope it's nothing major. If the cambelt went slack, might have jumped a few teath, if your lucky it's not done any damage.
I bought an endoscope the other day (hospital room + ebay = bankruptcy), that plugs into the usb on your laptop, and is small enough to feed into a spark plug hole. £49ish, tried it in the hospital room and it worked great, obviously haven't had chance to try on a car yet, should be good for hard to see areas and hopefully inside combustion chambers.