2017 Street triple 675 blue smoke on cold start.
I was looking at a street triple 675 for a friend today and noticed a little bit of blue smoke on the cold start(when revving). I do not like revving the engine on startup. But this person was revving it up to 6-7k rpm immediately after a cold start. Didn't bounce it off the limiter. I later asked if he does that and he said that he never does that because it damages engines. And it puffed a little bit of blue smoke(only when he revved it) for a bit before the water vapor started coming out. I turned it off and then on after 10 minutes or so. I let it idle and this guy again revved it to 6k and still a bit of blue smoke, but this time much less than in the beginning. The motorcycle is otherwise good. Ran only 17k Kms and has full service history. Asking here because I'm not used to British engines. If I saw this on a Japanese motorcycle, it would be an immediate no. On an Italian motorcycle, this wouldn't be a huge concern. But I'm not sure about British engines. The selling price is pretty good. But not good enough for an engine rebuild down the line. Go for it or pass?