Bad Smoke with Bad Smell?

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99sr220
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Bad Smoke with Bad Smell?

Post by 99sr220 »

This has happened to me twice, I've been riding under heavy load, when I've pulled up, I notice a lot of smoke coming from the pipe and it smells pretty bad, definitely not normal exhaust. When the engine off, the smoke keeps waffling out for a little while.

After a decent break, I restart and everything fine. This happened on the weekend and another time about 2 months ago. In between the bike has been fine over all sorts of terrain including long hills. Any ideas what has been happening? Is it just about me working the bike to hard or should I look at repairs?
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Indawoods
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Post by Indawoods »

Head Gasket possibly. If it smells like antifreeze.... that is probably it.

That is the only thing it can burn besides premix.

May want to repack your silencer too...
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Post by scheckaet »

carbon build up in the pipe and silencer burning up maybe?
remove them and check it out, easy enough
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Post by 99sr220 »

So it's not really a problem, but I should avoid revving too hard for too long, as this is how it's happened both times.
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scheckaet
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Post by scheckaet »

no just saying it COULD be...
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Julien D
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Post by Julien D »

could be a head gasket as Inda said. Antifreeze burning actually smells kinda good though. Like a sweet smell almost. If it smells kinda nasty, it could be burning transmission oil. That would be crank seals.

So there's three things to check, if you're losing coolant, replace the head gasket. If you're using transmission oil, check the crank seals. Clean the pipe and silencer just for good measure.
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Post by Mr. Wibbens »

Sounds like spooge burning in your pipe to me
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Post by kdxtreme »

Me and my buddy found some small dunes on a trail ride and decieded to play in them we were pinning it so much that our silencers caught on fire producing some bad smelling smoke. I would say a little lean? :lol:
Did I say riding?
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Post by 99sr220 »

>|<>QBB<
kdxtreme wrote:Me and my buddy found some small dunes on a trail ride and decieded to play in them we were pinning it so much that our silencers caught on fire producing some bad smelling smoke. I would say a little lean? :lol:
Was there smoke drifting out of the pipe even after you'd stopped running? This sounds very similar to what I experienced and the first time it happened I was running flat out in deep sand.

I wouldn't have thought so, because the pipe is quite new, but then again I did have a spooge problem for a while.

This seems to be the best explanation, because I'm not losing coolant or trans fluid. It is only a problem I've experienced going really flat out in higher gears, the bike's run normally - I've only noticed the smoke when I stop.
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Post by fuzzy »

Sounds like spooge burning in your pipe to me
+1 What oil were you running when you had a spoo problem? Stock silencer? What year? The 95-up stock silencers do not have packing, but rather a drain.
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Post by kdxtreme »

There was fire and smoke. :lol:
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Post by 99sr220 »

>|<>QBB<
kdxtreme wrote:There was fire and smoke. :lol:
That's impressive!

I'm running on synthetic oil, a local Thai brand with a decent rep. The pipe isn't standard, just a cheap one. Over here when pipes become clogged, they take them apart put them burn all the crap from the packing!
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Post by fuzzy »

Well, you may be there ;)
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