651 Re: My 84 K100 RS restoration Sun Nov 11, 2012 7:12 pm
JimK
Gold member
...FWIW...when mine is cold, makes thumps and bumps sounding almost like piston slap in a worn out 2 stroke. Like something banging around where it should not be. Was kinda alarmed. Read something in some forum newbie section about that...forgot where. Well anyway, when ridden, goes away in my case.