craigdavidcarter Posted December 22, 2014 Share Posted December 22, 2014 Hi I have a 99 sherco 250 having problems with it not revving out. I'm new to trials riding so was just looking for some help. It goes all spluttery at high revs. Any help will be great. Thank you. Quote Link to comment Share on other sites More sharing options...
lijah Posted December 22, 2014 Share Posted December 22, 2014 Sounds like a fuel blockage , either on tank tap filter or in carb its self could be spark plug. Quote Link to comment Share on other sites More sharing options...
craigdavidcarter Posted December 22, 2014 Author Share Posted December 22, 2014 I will take the carb off tomorrow and give it a good clean then and get a new plug. I already put a new fuel filter in line. Quote Link to comment Share on other sites More sharing options...
tony27 Posted December 22, 2014 Share Posted December 22, 2014 Shouldn't need a inline filter, the dellorto fitted standard has 1 behind the cover where the fuel line goes in Quote Link to comment Share on other sites More sharing options...
dadof2 Posted December 22, 2014 Share Posted December 22, 2014 When you say spluttery what exactly do you mean. If its fourstroking that usually means rich mixture, possibly clogged air filter If it splutters as in intermittently dying out that is more like fuel shortage. Quote Link to comment Share on other sites More sharing options...
kwackerdave1 Posted December 22, 2014 Share Posted December 22, 2014 Make sure fuel line doesn't kink when warm. I fitted inline filter with new tube that moved when hot and blocked supply. Quote Link to comment Share on other sites More sharing options...
copemech Posted December 23, 2014 Share Posted December 23, 2014 Replace plug with NGK BP5ES gapped to 0.6mm and report back. Buy two, they are cheap! Quote Link to comment Share on other sites More sharing options...
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