May 17, 20242 yr Hi guys m I’m hoping to get some opinions here for a problem I have with the bike. txt 280 2021, not done a lot of hours. I’ve got a real splutter/misfire coming off closed throttle to 1/4 throttle . I’ve stripped and rebuilt the carb, new o ring seals everything , but the problem is still there . so it’s pointing at the electrical side now I’m guessing . My cdi pins are pretty furred up, so I’ve cleaned them , but still no joy. can anyone else recommend where I look ? Is there a way to test if the cdi unit itself is the problem? I’m checking all my earths and connections now . any advice appreciated .
May 17, 20242 yr Trouble-shooting and always having replacement parts on hand is the biggest reason to buy trials bikes in pairs, nothing beats having a second bike of the same model and swapping entire assemblies until you locate the problem, especially when a carburetor, throttle body or CDI module is in question. ... any friends that own the same model bike? That can work too.
May 17, 20242 yr 1 hour ago, lemur said: ...nothing beats having a second bike of the same model and swapping entire assemblies.... So true! To the OP, it's often difficult to tell the difference between an electrical misfire and a fueling misfire. I'd richen the jet needle clip to see if you can move the misfire to a differed throttle position.
May 17, 20242 yr Author Cheers guys, I’ll ask about to see if anyone’s got a CDI unit I can borrow , expensive things to take a punt on. Will check needle again too.
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