Trying to keep it running
CB750 New member
Hi. First post here, and I hope to have more. I have a 1982 CB750SC. She's a beaut and hasn't given me too many problems due to age that I couldn't handle, but this one is puzzling me. The bike recently developed a rattle in the front. I'm pretty sure I'm dealing with exhaust, but I cannot find an accurate duplicate description of the sound I'm hearing on any forums. It is a distinct rattling noise that sounds like ball bearings in a coffee can (think rattling a can at a bad dog... lol). I'm pretty sure it's not a cam chain. I've hear cam chain noise before, and this ain't it. It is off and on at all rpms. It lessens or goes away for a moment when I pull the clutch in or sit at idle. But if I torque the accelerator (with the clutch in or out) it's there. Seems to occur only when I apply a load on the engine. I'm hoping it's just needing those copper exhaust pipe gaskets. Anyone with an idea on this...? Thanks