band1t Posted April 13, 2010 just got my 1996 CR 250 out of the shop went to the tracks over the weekend and my rear fender got covered in sludge from the exhaust they put a new top end on and cleaned my carb (no jetting) before i go yellin my head off at people what is causing this? i think the muffler is do for a repack if that's what it will take i run 36-1 mix Share this post Link to post Share on other sites
rpt50 Posted April 13, 2010 Did you, or someone else, change your jetting and/or mix ratio? Is your air filter over oiled? Share this post Link to post Share on other sites
band1t Posted April 13, 2010 Crank seal really cause i had the bottom end done last year (new crank and rod) and i would think it would all still be golden Share this post Link to post Share on other sites
band1t Posted April 13, 2010 Did you, or someone else, change your jetting and/or mix ratio? Is your air filter over oiled? i been runnin the same jetts and mix for 2 seasons no probs till now and yea my filter mayb over oiled i am off to check now Share this post Link to post Share on other sites
band1t Posted April 13, 2010 try 25:1? 👍 is that good on a new top end? Share this post Link to post Share on other sites
mxn4life Posted April 13, 2010 try 25:1? 👍 Um thats more oil than what he was already mixing. Share this post Link to post Share on other sites
band1t Posted April 13, 2010 air filter was to oily i think ill get a new one and hit the tracks next weekend to see if it fixes the problem if not than i am goin to yell at the shop who worked on it Share this post Link to post Share on other sites
SMarquez Posted April 13, 2010 Repack your silencer before you do anything else. Fresh gas and oil too. Share this post Link to post Share on other sites
band1t Posted April 13, 2010 Repack your silencer before you do anything else. Fresh gas and oil too. will do Share this post Link to post Share on other sites