December 22nd, 2012, 07:07 AM | #1 |
ninjette.org member
Name: max
Location: bali
Join Date: Nov 2012 Motorcycle(s): ninja 250 Posts: 60
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lean or rich condition
Hi,
I am running 2012 ninja 250. Here is this situation, my bike all stock jetting accept slip on muffler. This bike had no problem with hesitate, bogging or never have choke when start. When take off the bike seems to responsive on every gear and spark plug colour is white. Then I want to improve my bike with snorkel remove and add 1 washer each needles but at 9k bike seems hesitate/bog, then I add another washer (total 2 each needles) and bike running great but not to responsive as stock and spark plug still white. So my question here, with stock jetting is lean or rich, cause base from what i knew if the bike was not to responsive that is sign of rich condition. Appriciated your input. Ps : also try 2 or 1 washer each needles with snorkel, bike seems hard to rev to high rpm and throttle are heavy |
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December 22nd, 2012, 08:57 PM | #2 |
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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Mix is too lean at high range = main jets too small
I would replace everything back to original, when the engine performed better.
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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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December 22nd, 2012, 09:02 PM | #3 |
Long Time Rider
Name: Blue
Location: Charlotte, NC
Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.
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At 9k the stock bike is real rich. 1 washer does nothing much at 9k. 2 washers and snorkel removed makes the bike run better at 1/4-3/4 throttle. Depending on the thickness of your washers you may be able to do 3. Replace your stock filter with something like Pipercross, WIX or UNI. These filters utilize the frame of the stock air filter and tend to slightly improve performance.
As far as the spark plug being white, you should be fine. A grayish-white looking plug is normal. You probably don't have a enough miles on the bike for any significant carbon build up. Not only that, you maybe running at an optimum level that your fuel is burning efficiently. Burning away all deposits and showing a clean plug is a good (up to a point). |
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December 23rd, 2012, 08:47 AM | #4 | |
ninjette.org member
Name: max
Location: bali
Join Date: Nov 2012 Motorcycle(s): ninja 250 Posts: 60
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ok then I go back to stock jetting if this normal with white colour spark plug. Glad everything normal. Thanks for confirmation and Next I will replace air filter.
Quote:
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December 23rd, 2012, 09:20 AM | #5 |
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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Normal is a relative concept.
"When in doubt, lean to the side of mercy." - Cervantes Paraphrasing Cervantes: When in doubt, lean to the side or rich mix. Learn to read the best thermometer that your engine has: http://www.dansmc.com/spark_plugs/sp...s_catalog.html
__________________________________________________
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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