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While out last night I had a double hit to the nuts and I was wondering what causes could this be from. When full throttle is applied, and then let off i get some blue smoke which is definatly oil burning, judging by the wonderful odor. But I recently did the clean air removal on it, and I noted that it is possible that during maybe a wheelie or something that has the bike somewhat inverted up, it could case a small amount of oil to flow into the exhaust. I was wondering which one is more likely? The smog removal just caused a slight amount of oil to fill the pipe or a brand new 636 which was broken in properly and only has 3k miles engine is already dying?

Oh, and when I was riding home I turned down my block trying to get home because I was worried something was/is seriously wrong with my bike, I was doing an astonding 35 mph in a 25 and a cop sitting infront of my house inside the block gave me a ticket.

Thanks for the help.
 

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If your bike burns oil so much that you have to top it up on regular basis (between oil changes) and continually pours out blue smoke then the engine is probably messed up somehow.

On the other hand, if this blue smoke was one time only thing, then probably a little amount of oil has gotten into exhaust etc. and that caused the smoke.
 

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I'm not sure about bikes, but in a car, when at WOT sometimes, the valves actually float because the engine is turning faster than the valve springs can re-seat the valves. this allows oil from the head to enter the combustion chamber in both the intake and exhaust stroke, which causes some smoking on decel. If the condition does not exist except under very high RPM conditions, then this could be the case. If so, it's not doing any damage to the engine. Hope this helps.
 

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It might be possible you are burning a little oil, I have read a few reports of the new Honda 600 RRs smoking on downshifts. I was out with 2 of them last weekend and sure enough both were letting out small puffs of blue smoke even when riding at a normal pace, they both only had around 1,500 miles.

I would monitor the oil level and let it ride, my 99 R6 used to smoke a little bit but I never noticed a decrease in the oil level.
 

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Originally posted by CDRacingZX6R


Oh, and when I was riding home I turned down my block trying to get home because I was worried something was/is seriously wrong with my bike, I was doing an astonding 35 mph in a 25 and a cop sitting infront of my house inside the block gave me a ticket.

Thanks for the help.
Did you tell the cop you were in a hurry to get home because you were smoking? [:M94] J/K
 

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Originally posted by NemesisOne

Originally posted by CDRacingZX6R


Oh, and when I was riding home I turned down my block trying to get home because I was worried something was/is seriously wrong with my bike, I was doing an astonding 35 mph in a 25 and a cop sitting infront of my house inside the block gave me a ticket.

Thanks for the help.
Did you tell the cop you were in a hurry to get home because you were smoking? [:M94] J/K
Hahah!
 

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Its entirely possible that its a normal occurance, if the camshaft profile has the exhaust valves open for too long when the piston begins the intake stroke. What happens is as the piston heads down from TDC, a vacuum is created. If the exhaust valve is open long enough, oil can be drawn past the exhaust valve seals, through the valve guide, and into the exhaust port.

Usually what happens is that the vacuum is created, and the oil is pulled into the exhaust port, but then the valve closes before the oil can get into the combustion chamber. What usually happens at this point is another cylinder has its exhaust cycle at the same time, and the oil is then pulled into the headers, into the hot exhaust can, where it partially burns, and is ejected out the tailpipe as a cloud of not-really-all-that-pretty blue smoke.

Usually, this is a traight on higher mileage engines that need their valve guides, valve guide seals, and valves replaced.

BC.
 

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If you look on the left side of bike, you will see a hose with a little bottle at the end. This is to catch any oil that might be in the air box. Apparently, if the engine is overfilled with oil it will / can regurgitate the oil into the airbox. I would think that possibly a high wheelie might have the same effect. Don't know. Check to see if there is any oil in that catch bottle.
 
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