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Old 11-25-2012, 08:30 AM   #1 (permalink)
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Default Puff Blue Smoke~Startup


I'm sure this has been answered before, but I simply cannot find the thread. Yesterday, I had the OEM heated grips installed. The process took about four (4) hours, for reasons not here pertinent. When the technician brought the bike around front (100 yd trip) he blip-ed the throttle and a puff of blue smoke emerged from my full Akrapovic exhaust.

I know this is common in some situations and on some engines on cold start up, but this slightly different.

Thoughts, comments, threads?


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Old 11-25-2012, 09:08 AM   #2 (permalink)
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I don't recall the thread about this but blue smoke is always oil being burnt in the cyclinders. Maybe the bike tipped over and oil got in. How is it running?
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Old 11-25-2012, 10:11 AM   #3 (permalink)
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Valve stem seals ?

Get someone to follow you and watch your exhaust for smoke, when you gear change AND when you open the throttle after a short time of it being closed ( over run)...

Let us know, oh and watch your sight glass..
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Old 11-25-2012, 12:50 PM   #4 (permalink)
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My 11 with over 18K doesn't do that.
That would worry me.
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Old 11-25-2012, 01:40 PM   #5 (permalink)
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Well gentlemen,

I probably need to add that this bike has about 2500 miles on it, is not a recall bike and was meticulously broken in following the manual's instructions, plus my 55 years of riding bikes.

Also, I've owned several Porsche 911's and they do this because of the horizontal cylinder layout, as I suspect do BMW R type motors for the same reason. But even though our engines are canted forward at a rather severe angle, I would have thought the oil would still drain (via gravity) back into the sump.

If it's seals, guides, seats, or rings (if this engine has guides) then it's a warranty matter 'cause I've never abused this engine. I just can't believe there is a mechanical problem but I will watch it and report back no matter what the outcome.

Please continue to comment if you have any.


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Old 11-25-2012, 02:12 PM   #6 (permalink)
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Go ride the piss out of it. If you see it is consuming oil then take it in. That is what the warranty is for.
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Old 11-25-2012, 04:22 PM   #7 (permalink)
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Blue smoke Burning Oil
Black smoke Running Rich
White smoke Running Lean
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Old 11-25-2012, 04:52 PM   #8 (permalink)
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Well, thanks for the input.

After last post, I started it up with the exhaust tip in bright sunlight. No smoke, no oil residue in muffler tip, and no oil on finger from you know what to the muffler. Only observable clue is black exhaust residue, as is typical of an engine running rich. Then rode sixty miles normally. At home with muffler tip again in bright sunlight.......no smoke, even "blipped" the throttle several times and again.........nothing.

On Tuesday I will check with the shop and report back. I'm beginning to think it's nothing, which, of course, given all the facts, is the reasonable conclusion.

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