Smoke and Odor
Posted: Wed Mar 28, 2018 10:26 am
Hey all, first off I am new to the bike world and purchased a 1982 CB650 that hasn't been on the road in a few years. It does currently run and drive and I have begun doing some overhaul.
I sent the Carbs away to be professionally done and I put them back on the bike the other day, the mechanic stated that once on the bike they will need to be further adjusted. When I fired up the bike it idled really high, around 3k, I played with the idle adjustment screw and it didn't change. It ran like that for a few minutes and then started idling down and finally died out. I was able to keep it running if I stayed onto the throttle so I think these were the adjustments he was talking about.
Finally to my point about this post. I started the bike up again the other day just to let it run and try to adjust the idle myself. (Carbs still not fully synced at this point). I noticed some smoke coming out from where the exhaust mounts to the cylinder 4 and had a very strange odor to it. I'm not convinced it was just exhaust leaking by I feel like something was possibly burning, like a chemical type smell. My first thought would be Cylinder rings, the bike has plenty of fresh oil but I wasn't sure if anyone has run into anything similar in their builds or how you might be able to diagnose a problem like this without striping the motor down. Thanks guys for any advice you can give, and like I said, I'm a newbie, so don't razz me too hard
I sent the Carbs away to be professionally done and I put them back on the bike the other day, the mechanic stated that once on the bike they will need to be further adjusted. When I fired up the bike it idled really high, around 3k, I played with the idle adjustment screw and it didn't change. It ran like that for a few minutes and then started idling down and finally died out. I was able to keep it running if I stayed onto the throttle so I think these were the adjustments he was talking about.
Finally to my point about this post. I started the bike up again the other day just to let it run and try to adjust the idle myself. (Carbs still not fully synced at this point). I noticed some smoke coming out from where the exhaust mounts to the cylinder 4 and had a very strange odor to it. I'm not convinced it was just exhaust leaking by I feel like something was possibly burning, like a chemical type smell. My first thought would be Cylinder rings, the bike has plenty of fresh oil but I wasn't sure if anyone has run into anything similar in their builds or how you might be able to diagnose a problem like this without striping the motor down. Thanks guys for any advice you can give, and like I said, I'm a newbie, so don't razz me too hard