Hi Guys, Been asked to post from an old boy who I know, He has a 1981 R100. The bike blows blue smoke on start up, then has a blue haze when on tick over and warm. He has had the heads off and changed the rings but still the same, he says he can see oil in the bore (using a endoscope) and the top of piston looks wet. I don't really know much about the old bikes except the liners are coated and the clearance is quite tight, but my gut feeling is saying valve guides? is there a hard and fast way to check? Any other areas to consider? Any help appreciated.
Thanks
Steve.
Thanks
Steve.