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July 13th, 2012, 12:06 PM
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wat
Name: wat
Location: tustin/long beach
Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much.
Blog Entries: 5
MOTM - Oct '12, Feb '14
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taking bets: crank smoke
crank breather started smoking a bit on the 92 fzr today. i usually wont really worry about a little bit of oil, but it seemed a bit excessive. looking for ideas of causes before i get a chance to open it up. im thinking a transmission bearing surface is jacked and overheating smoking up some oil. lets take bets and whoever gets it right gets a free paperclip (pickup only)
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July 13th, 2012, 12:40 PM
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Jigglin' your Jiglets
Name: Sean
Location: San Jose, Ca
Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much.
Blog Entries: 1
MOTM - Apr '13
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This should help http://www.fhsoils.com/motor.html
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If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676  Supersports are for n00bs |
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July 13th, 2012, 03:18 PM
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Wartown, USA
Name: Bryan
Location: Warner Robins, GA
Join Date: Nov 2009 Motorcycle(s): 2009 Ninja 250R SE, 2007 Ninja 650R, and assorted other bikes Posts: A lot.
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Is the air filter drenched in oil? If so, I'm gonna say worn piston rings.
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July 13th, 2012, 03:43 PM
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wat
Name: wat
Location: tustin/long beach
Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much.
Blog Entries: 5
MOTM - Oct '12, Feb '14
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no oil up top. no smoke from the exhaust. just the crank breather. crank breather does have spray on it which i would expect as the transmission is directly below it.
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July 14th, 2012, 08:59 AM
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Daily Ninjette rider
Name: Hernan
Location: Florida
Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot.
MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16
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Quote:
I would say that the clutch is the big generator of heat within the crankcase. Faulty bearings reveal themselves by noise earlier than by heat, but what you suspect could be. In my humble opinion, it is hard for a defective bearing to heat up that big mass of oil to the point of generating smoke, but it is easier for slipping clutch discs.
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Motofool  .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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July 14th, 2012, 09:21 AM
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#6 |
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RIP Alex
Name: Cuong
Location: Houston, TX
Join Date: Apr 2011 Motorcycle(s): '10 250r, '09 265r Posts: A lot.
Blog Entries: 2
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At what point in riding the bike did it start smoking? what was the engine/coolant temp and average ambient air temp? Humidity? Do you even have gauges on the FZR? If the breather is wet enough and the engine case is hot, it'll evaporate the oil on it and make some smoke. How much smoke are we talking about here though.
I agree with motofool about the whole heating up oil to cause smoke.
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HalfFast Racing Team Serving Greater Houston Area Riders:WFO Riders MotoHouston HPC CMRA Ride Smart Fastline Lone Star Track Days |
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July 14th, 2012, 11:48 AM
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#7 |
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wat
Name: wat
Location: tustin/long beach
Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much.
Blog Entries: 5
MOTM - Oct '12, Feb '14
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showed it to my mechanic (brother) he said its fine. he said some smoke out of the case breather is ok. normally it goes to the airbox and you dont see it. clutch and springs were recently replaced (under 10k ago) overall engine temp is fine.
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