My Tiger has been parked for about six weeks. We've got some cool weather this week so I decided to take it to work. When I kicked it over this morning thick white smoke (not blue or black) started pouring out of the right pipe. It doesn't smell like burning oil...more like something hot (I wish I could explain that better but I can't). I'm wondering if this is just steam from moisture in the pipes or something...could explain the 'hot' smell...or if it could be something more serious. FYI - It was in the shop back in June and at the time compression was 'excellent' though I don't remember specific numbers.
jonkull, If it were any water cooled motor I would say water. In an air cooled motor, white smoke is rare, but almost HAS to be water vapor, but I wouldn't imagine it continuing to smoke (white) for more than a minute or so. How long did you run it? If you have the original megaphones on it they may hold enough water to smoke a while.....did your dog lift his leg up your pipe? (Or would that be yellow smoke? )
'Never argue with an idiot, they'll bring you down to their level, and beat you with experience'
I didn't run it long because I didn't want to hurt anything or get stranded so I took my other bike to work. It was on maybe 30 seconds. Blipped the throttle a couple of times before killing the engine. When I get home from work I'm going to take it around the block and see if it clears. At least it started in one kick after sitting all that time. That's something...
Well I ran the bike when I got home from work yesterday. Took it for a quick quarter mile run around the block and smoke cleared part way into it. No smoke this morning either. I'm inclined to say steam because it was white and smelled 'hot'. My mother-in-law was ironing something last night and that's kind of what I smelled. Not my mother in-law...the iron. I'll check compression regardless.
Jonkull: The clincher is whether the smoke hung around for a long time or disappeared quickly like steam does....?
That's a very good question but I can't answer it. It's been windy here. Smoke could have disappeared quickly or been blown away in the wind. If it smokes again I'll pay attention. What would it mean if it hangs around?
I don't know how relevant this is but last year I had two occasions where the bike hadn't been ridden in a while. Both times it was hard to start and when it did the right cylinder didn't kick in for a few seconds even though the left was running. I had brought it to a mechanic (I tend to break things when I work on them myself) and he couldn't find anything wrong with it. It's run beautifully ever since and I've never had that problem again.
Oh...I've released that magic smoke before but it's full now.
Seriously though...no smoke from the tailpipe again today so I'm going to let the bike sit until Monday so I can see if it smokes again and if it dissipates quickly. I hope this is nothing serious. I don't have the money for this now...
My money is still on wet sumping. Good news is that it is cheap to investigate and cure. Does your oil level drop when you leave it for a while, and does it come back up to full when you've run for a couple of minutes?