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oil ratio/spark plug problem

Joined
Apr 18, 2007
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#1
i run my bike at 40:1 is there any advantage to running it at 50:1? i have cr250r o3..

im trying to fix a spark plug problem im having..i take my bike for a long hard ride ( 3-4 hours ) it runs perfect..i can stop and start as i please..but when i take it out of shed next day no spark needs new plug or atleast to clean old one..is that normal?

40:1, premium unleaded, motul 800T oil. if that helps?
 
Joined
Nov 7, 2006
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#2
I run mine at 32:1 using Mobil Racing 2T with no problems. What does your plug look like when you are done riding? Is it black and wet? Sounds like you might have a jetting issue. Do a search of these forums. You should be able to find some great info on how to jet your bike. The color of your plug will help determine if you are running rich or lean. Just changing your ratio or going to a hotter plug usually isn't the answer. By the way...what plug are you using?
 
Joined
Apr 18, 2007
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#3
from memory the plug is BR8eg, plug is dark, wet look to it...oily if anything..the bike dosnt miss a beat goes nice..thanks for quick reply
 
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Nov 7, 2006
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#4
Same plug I use. Here is a link to the Jetting sticky in the 2-stroke section. Hope it helps. :cool:



Edit: Just click on "link" ;)