bonnietiler Posted November 5, 2012 Share Posted November 5, 2012 Pal of mine has a 09 TDR 125 nice bike had a few owners worked fine..till last week... Then suddenly....won't go past 40.mph? I'm wondering if that Cat ( I think it has one in the exhaust has collapsed ?) If it was an early machine i'd just say it needed a decoke? it's done 9k and not been that well looked after. he's bringing over at the weekend and I'm supposed to be an appropriate expert...hah! Any help on where first to look much appreciated Apparently, it starts easily makes no nasty noises and runs well up to 40 mph...wont rev out in any gear. Many thanks bonnietiler Link to comment Share on other sites More sharing options...
dt502001 Posted November 5, 2012 Share Posted November 5, 2012 Well besides the basics plug, air filter ,compression test ,might be the power valve stuck closed. Link to comment Share on other sites More sharing options...
blackhat250 Posted November 5, 2012 Share Posted November 5, 2012 Yip " as dt50 says, ditch the filtre, then the plug, see if the powervalve works, then exhaust, the last stroker i had with poor compression, was a pig to start,, but your tdr is starting good , so i dont think is comp. Link to comment Share on other sites More sharing options...
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