June 9, 200917 yr The poor running does not happen until the engine gets hot,its un ridable as the engine coughs, splutters and backfires up to about 1/3 throttle.starting the engine once its got to this state is a dangerous operation as it violantly kicks back through the kickstart.Once the engine is cold it starts easily and runs fine until hot again ????? ANY IDEAS WOULD BE MUCH APPRETIATED
June 9, 200917 yr sounds the same as the problem i had with my new evo 300. turns out to be a faulty cdi unit
June 9, 200917 yr Gday, in no particular order, have you checked the valve clearances? What does the plug look like? Air filter clean and oiled? Cheers, Stork
June 9, 200917 yr Author Gday, in no particular order, have you checked the valve clearances? What does the plug look like? Air filter clean and oiled?Cheers, Stork just purchased the bike a month ago 2008 model ,ran fine first 2 outings of a couple of hours,guy i bought it from had the valve clearances checked just before he sold it not sure if it was done correctly ????.everything else you mention fine.
June 10, 200917 yr Sounds like the timing is out so suggest it is electronic fault. There is a slim chance you have a blocked idle jet, or faulty hot start button?
June 10, 200917 yr Had the same problem with my 08 turned out to be the CDI lampkins sent a replacement under warrenty never had a problem since
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