luckynumber0
In Over His Head
Hey guys,
Been reading a few of the "help! my engine is rattling" threads but am still scratching my head here on my '82 650 (stock except for K&N pods on the carbs, some aftermarket mufflers, and a rejet to compensate for them)
It's a new rattle in the top end. I adjusted the valves & cam chain to manual spec but it didn't seem to help at all. It's intermittent, happening only at high RPMs (engine braking, a burst of throttle) and - as far as I can hear the rattle doesn't happen when I'm cruising. I noticed it two days ago. The bike is my daily driver but there was no noticeable change in the performance of the bike nor did it get worse. When I noticed the rattle I stopped riding it around.
It sounded like maybe a tappet locknut had come off and was floating around in the adjustment bay, but when I popped off the covers everything was fine. That's the sound though - like a loose nut rattling around somewhere.
No chunks of metal or plastic in the oil as far as I can tell. Some metal dust stuck to the magnetic drain plug.
What do we think? Has the cam chain guide finally worn through? Is it the chain itself? Stupid question, but there's no chance in hell it's safe to ride to work tomorrow morning, right?
Thanks,
Lucky
Been reading a few of the "help! my engine is rattling" threads but am still scratching my head here on my '82 650 (stock except for K&N pods on the carbs, some aftermarket mufflers, and a rejet to compensate for them)
It's a new rattle in the top end. I adjusted the valves & cam chain to manual spec but it didn't seem to help at all. It's intermittent, happening only at high RPMs (engine braking, a burst of throttle) and - as far as I can hear the rattle doesn't happen when I'm cruising. I noticed it two days ago. The bike is my daily driver but there was no noticeable change in the performance of the bike nor did it get worse. When I noticed the rattle I stopped riding it around.
It sounded like maybe a tappet locknut had come off and was floating around in the adjustment bay, but when I popped off the covers everything was fine. That's the sound though - like a loose nut rattling around somewhere.
No chunks of metal or plastic in the oil as far as I can tell. Some metal dust stuck to the magnetic drain plug.
What do we think? Has the cam chain guide finally worn through? Is it the chain itself? Stupid question, but there's no chance in hell it's safe to ride to work tomorrow morning, right?
Thanks,
Lucky