I noticed my dads pressure washer leaking oil and I'm not quite sure what is causing it. The leak is at the camshaft pin that holds the timing belt in place. I believe there is suppose to be oil in the area where the belt is, but im not 100% sure. If there is, then possibly the o-ring on the camshaft pin is not sealing the oil in properly? I've posted a video so hopefully one of you guys would know what I need to replace. Just to clarify, the leak is not coming from the valve cover. It is only coming from the camshaft pin where it meets the valve cover holding it in place.