Karlosthejackel76 Report post Posted March 14, 2020 Hi im new to trials but have been racing enduro over the past 5 years or so. Ive bought an 09 sherco, ridden it for a couple of hours and it seems to have an over fuelling issue. I can potter about at 1/4 to 1/3 throttle no issues. Give it some beans- more throttle and higher revs up a hill or even on flat and it starts to bog and blue smoke losing all power and running crap. To me its like a worn needle or the jet is wrong. It takes then a few minutes of pottering about before it clears and runs clean at low throttle. Again if i open it up back to square one and rubs crap and smokes for a few mins. Ive not had carb apart yet but was gonna go straight in with a new needle and jet if there is a recommended jet and needle part number combo thats proven. Any help appreciated. Quote Share this post Link to post Share on other sites
compactpete Report post Posted March 14, 2020 What oil mix ratio are you running? Quote Share this post Link to post Share on other sites
brucey Report post Posted March 14, 2020 Oiled up/blocked exhaust maybe? Quote Share this post Link to post Share on other sites
Karlosthejackel76 Report post Posted March 15, 2020 10 hours ago, compactpete said: What oil mix ratio are you running? 70:1 ive been told to go for 1 Quote Share this post Link to post Share on other sites
billyt Report post Posted March 15, 2020 First step: New Spark plug If not jetting then it could be the coil or CDI box. Quote Share this post Link to post Share on other sites
nigel dabster Report post Posted March 16, 2020 is this the one with tank in the wrong place? Quote Share this post Link to post Share on other sites
guy53 Report post Posted March 16, 2020 The tank is not in the wrong place, your looking at the bike from the wrong side. Guy Quote Share this post Link to post Share on other sites
pauls320 Report post Posted March 16, 2020 You just bought it? was it running fine before cr*pping out or purchased like that..? Quote Share this post Link to post Share on other sites
Karlosthejackel76 Report post Posted March 22, 2020 It runs ok most of the time then just seems to get over rich and smokey. Ill have a tinker when i next get to the bike? Quote Share this post Link to post Share on other sites
Karlosthejackel76 Report post Posted April 15, 2020 Just to let u all know i managed to have a look and the needle had been fitted the wrong side of the retainer so clearly now n again it was staying up rather than working with the slide. 1 Quote Share this post Link to post Share on other sites
