Thumper600 Posted November 1, 2011 Share Posted November 1, 2011 Hey everyone. Recently I was riding my XT and I noticed that in 5th, and only 5th, it climbs through the revs nicely, but won't rev out like it does through all the other gears, if the back wheel is spinning in 5th, it revs out fine, but when it has any kind of load it refuses to go any faster. This happens at about 120-140KMPH. Could this have anything to do with the carb, or the second jet not starting like it should, or not getting enough air? or anything like that? Cheers, Thumper. EDIT: It is a single cylinder 4 stroke, single carb with the YDIS. EDIT2: I was taking a video on my phone to show you what I meant but I dropped it and it smashed(excellent) Link to comment Share on other sites More sharing options...
slice Posted November 1, 2011 Share Posted November 1, 2011 Hi Thumper, check the fuel lines first and make sure they are ok, they can get blocked same with the fuel tap filter. Pipes can collapse under pressure so if they are a bit old and knackered change them out. might I suppose be a blocked jet but then it would do it in all gears and not just 5th also check the gaskets around the carb to make sure they are not split (to much air) other than that your on your own with out more info to go on. Link to comment Share on other sites More sharing options...
Thumper600 Posted November 1, 2011 Author Share Posted November 1, 2011 Cheers for the reply. I've checked all the fuel lines and the filter, all sweet as. I don't think it's starving for gas. Gaskets look OK, but could do with a change, I got the bike off a guy who didn't know what maintenance was, the bike was caked in about half an inch of clay when I got it. I think I better just take the carb off and give it a good clean, but I don't think that's the problem. Link to comment Share on other sites More sharing options...
Moderator Airhead Posted November 1, 2011 Moderator Share Posted November 1, 2011 check the carb breather tube is clear and not partially plugged with said clay Link to comment Share on other sites More sharing options...
Thumper600 Posted November 1, 2011 Author Share Posted November 1, 2011 I can't even see a breather! I think we have found the problem. Haha Link to comment Share on other sites More sharing options...
slice Posted November 3, 2011 Share Posted November 3, 2011 Ok good for you. WHAT IS IT! tell us so next time some one asks we can tell them. Link to comment Share on other sites More sharing options...
Thumper600 Posted November 6, 2011 Author Share Posted November 6, 2011 I just cleaned the carb out and made sure that nothing was blocked and it seems to still be doing it but not as bad. Link to comment Share on other sites More sharing options...
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