Those bikes are known to have some slop in the timing chain die to a weak tensioner spring. I don't know how to check what caused it to suddenly get louder though.
On Wed, Aug 14, 2019, 17:35 logan vandam <loganvan...@gmail.com> wrote: > 84 cb650sc usually has a little tic in front but on my way to work it was > really loud hollow knocking sound. Didn't seem to do it in lower rpms so I > road in fourth to get to where I needed to be. I stopped and put oil in it > thinking that may help but nothing. Any info will be greatly appreciated. > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to nighthawk_lovers+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/nighthawk_lovers/435a6ff7-81d1-402b-9d56-62e186d040dc%40googlegroups.com > . > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To unsubscribe from this group and stop receiving emails from it, send an email to nighthawk_lovers+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/nighthawk_lovers/CAJARLXXBWeTUNR2x2hHi%2BU42TBtu2QTWSTwAbsB90svqtHVOog%40mail.gmail.com.
