The International CBX Owners Association

1980 CBX-SS 7000 miles since rebuilt at Tim's. When started cold, it gives blue oil smoke from both exhausts for 3-4 minutes and then stops. No further smoking with warm starts after that and none during riding. Can't detect any appreciable oil loss on the dip stick. Runs great otherwise. I am guessing valve seals, but they usually smoke on every start from my experience. Anyone else had this problem?

I forgot that I had already posted this question. This memory thing is getting to be a pain! I wonder if they will let me keep my CBX in the the nursing home......

What answers did you get, when you posted it before....??

Got this one from you:


Re: Smoke on starting

Postby EMS » Mon Aug 27, 2018 8:40 am
Symptoms are that of a small, slow oil leak into the combustion chamber when bike is parked. Most likely through the valve stem seals.
Not a terrible thing, but something that comes with age and is part of a proper engine overhaul.