gi125 Posted August 10, 2008 Report Share Posted August 10, 2008 hi, i have a 05 sherco 125 and it is a bit smokey my dad has dropped the needle to weaken off the mixture but it still smoking , running on 50 to 1 on castrol would a new piston and rings resolve it or do you have anymore suggestions thnks Quote Link to comment Share on other sites More sharing options...
copemech Posted August 10, 2008 Report Share Posted August 10, 2008 Run the bike on 80:1 full synthetic, or at the very least Yamaha 2R semi-synthetic, easy to find usually. Then go out and blow the smoke out og it to get all that oil out of the exhaust! Quote Link to comment Share on other sites More sharing options...
gi125 Posted August 10, 2008 Author Report Share Posted August 10, 2008 Run the bike on 80:1 full synthetic, or at the very least Yamaha 2R semi-synthetic, easy to find usually.Then go out and blow the smoke out og it to get all that oil out of the exhaust! thnks i will get me dad doin tht then or is ut just the exhust because its got alot of stuff in it ? Quote Link to comment Share on other sites More sharing options...
copemech Posted August 11, 2008 Report Share Posted August 11, 2008 A 50:1 mix is more commonly used in older air cooled motors. With the watercooled motors, the 80:1 ratio with high quality oil seems the standard now, although some may argue to a point. Fact is, many who do not ride really hard have successfully run at 100:1 for years now without problem. If you have ridden your bike for a length of time at that ratio. the muff is bound to be full of oil. They can clog up badly and the sherco muff is not easily cleaned(another story). What I normally recommend is a good hard run down the road a bit through the gears, like a drag race. Done about a half dozen times will get the exhaust REALLY warmed up, and chances are it may light off some of the oil and start smoking like a freight train, just billowing, that is the excess buildup! Let it cool down and try it again! When the excess ig is gone, it will stop that! After that, only a periodic hard run or a tough trial with some good long uphills will keep things from excess buildup. And if you are a young lad just putting about a lot and never really revving the crap out of it, you may well consider the higher ratios even. Put this way, if the pros can run 80:1 you should be just fine. Bar end plugs help keep your bike from blowing up when you fall on the throttle side! Quote Link to comment Share on other sites More sharing options...
gi125 Posted August 11, 2008 Author Report Share Posted August 11, 2008 thnks for tellein me that i will do i tomorrow and run it up amn down the road i will reply back if it doent work Quote Link to comment Share on other sites More sharing options...
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