Tornado tre 900 smokey on startup?
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Thread: Tornado tre 900 smokey on startup?

  1. #1
    Member stevo67's Avatar
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    Tornado tre 900 smokey on startup?

    As title suggests recently noticed a little blueish smoke on start up and when revving from cold, seems to be fine once warm and running and dose not seem to be any loss in power
    She,s just clocked 13,800 miles
    ????
    Thanks in advance, Steve

  2. #2
    GBo
    GBo is offline
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    Blue smoke is usually oil and could be many reasons, Some possibilities are overfilling, rings, valve guides or stem seals.do you get any blow by coming up breather into airbox? Could the smoke be black and the usual overfuelling?

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    Member stevo67's Avatar
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    have noticed a bit more oil usage/ topping up recently, fuelling is good had the bike checked and remapped to the sport can at Benetts around 3 months ago, will get her apart and do some investigation as winter sets in, was great all through the summer clocking up 1500 miles

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    Senior Member Engenia's Avatar
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    Errol Kowald
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    Quote Originally Posted by stevo67 View Post
    have noticed a bit more oil usage/ topping up recently,...
    It is possible that the rings in one cylinder have managed to align themselves. This happened to me several years ago. I noticed the oil consumption increase overnight. As it turned out, the head had to come off for a different reason and I discovered that the ring gaps were lined up. When I set the gaps to 180 degrees the problem went away. Normally they are set to 120 degrees, but the most important ones are the two compression rings, and the further apart they are the less likely they are to rotate to alignment.

    The problem you describe is only at startup though, not full time, so it is most likely due to leaking valve seals allowing oil past when not running. The buildup is quickly burnt off at startup and not seen afterwards.
    Mind you, there has been an instance of a porous head doing exactly the same thing. I'm not sure how the owner fixed it, but it had a few people scratching their heads for a while.
    hooroo, Errol www.engenia.com.au [139,200 km - and counting .....]

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    Here's a bit of "old school" diagnostics known only to us old farts.

    If it smokes when accelerating, it's most likely an issue with piston rings. If it smokes on deceleration, or gives a puff of smoke when you open the throttle after decelerating, then it's most likely the valve guides.
    Take care observing the exhaust though. Unless the smoke is visible in your mirrors, you have to swivel your head around. Don't ride off the side of the road while doing it! It might be a better idea to have a mate ride behind you and keep an eye on your exhaust.
    ron d likes this.

  7. #6
    Member stevo67's Avatar
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    took her out for a run the other day with a mate behind and he reported no smoke coming from the bike when running and on that occasion there was none on startup either, very strange ????

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