CBR 600F3 1995 - 1998 CBR 600F3 Forum

oil on my plugs

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Old 10-30-2008, 12:34 AM
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Default oil on my plugs

i started my winter tune up on my 97 600. when i went to change the plugs i noticed there was oil on 3 of them. there is no smoke out of the exhaust though. im sure its time for new rings. my bike only has 15000 miles. any ideas?
 
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Old 10-30-2008, 04:45 AM
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Default RE: oil on my plugs

oil on my plugs, wot a great name for a **** movie. Wot you have on your plugs my not be oil, but a sooty deposit from an over rich mix (mixed with fuel deposits). Bad news though if it is oil then you may be staring down the barrel (da,da) of worn rings. As you have said though, you usually get other symptoms associated with it. Peel off some wheres once the bike is warmed up on your next ride & gradually build the revs up & check for smoke. Also with rings you can get an oily (not sooty) residue forming at the end of your pipe.
 
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Old 10-30-2008, 07:07 AM
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Default RE: oil on my plugs

I think it may be an over rich mixture myself. I swapped my plug out recently and there was that soot around the threads and the plugs were clearly over rich. I've got the carbs off and rebuilt, however, I'm not sure I am up to fixing the fixture levels (something I've heard can be a challenge). I am resyncing the carbs though and wondering if that may help.. <shrug>
 
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Old 10-30-2008, 12:01 PM
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Default RE: oil on my plugs

yeah i have wanted to pull the carbs and rebuild them for a while not. this might just be the push i need to get it done. maybe that will be my weekend project. as for oil on the pipe, theres nothing there. i rode for about 45 minutes, pulled over and went through the revs slowly and at about 10,000 i got a small puff of brown smoke buy only for a second.
 
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Old 10-30-2008, 12:10 PM
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Default RE: oil on my plugs

Go to Advance Auto and get iridiums for your bike.Ask for plugs for a 2000 CBR 929.$29 and change out the door for a set of 4.

Rejet your carbs.The only time you need to rebuild is if the bike has been sitting for a while.

Check all air filters,including that thingy that's back in the emulsion tubes behind the airbox and make sure it's all clean and clear.

Brown smoke is good.Oil burning smoke is blue and has it's own unique scent.Ask me how I know that
 
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Old 10-30-2008, 12:19 PM
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Default RE: oil on my plugs

thanks for the advise. i knew it wasn't oil smoke cause of the color. i have had enough old school trucks die on me to know that one. i don't think it wise to go around smelling blue smoke lol.i pulled my K & N and cleaned it. i also went in and pulled that other one and it was a little dirty but i cleaned it for now and will replace it later. all the problems i have been having are making me believe that when the previous owner had put on the pipe and K & N he never jetted the carbs. now ill have to drop the dime and do it.
 
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Old 10-31-2008, 09:13 AM
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Default RE: oil on my plugs

ORIGINAL: my98gtvr4

thanks for the advise. i knew it wasn't oil smoke cause of the color. i have had enough old school trucks die on me to know that one. i don't think it wise to go around smelling blue smoke lol.i pulled my K & N and cleaned it. i also went in and pulled that other one and it was a little dirty but i cleaned it for now and will replace it later. all the problems i have been having are making me believe that when the previous owner had put on the pipe and K & N he never jetted the carbs. now ill have to drop the dime and do it.
Sorry to threadjack, but if a slip on is added and a K&N installed, it should be re-jetted? I'm not sure if my bike is jetted or not, but now i'm interested.
 
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Old 10-31-2008, 12:24 PM
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Default RE: oil on my plugs

yeah i am starting to get the impression that mine was never jetted. now i have to get it done i just don't know what jets to get.
 
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Old 10-31-2008, 12:27 PM
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Default RE: oil on my plugs

i talked to a guy at cycle gear and a few posts i have read all say that any mods will need jetting. since most jets are adjustable you just go that route and keep changing the jets the more you mod your bike. a slip on and k&n will need a rejetting. i know i had to have it done on my 98 F3 when i got a pipe and k&n put on there. It would backfire all the time until i got it jetted. now this bike is starting to do the same thing so i will have to jet that as well
 
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