Hi all i bought a xt660x 2014 last year and been plagued with problems. Kept cutting out at first so took to yamaha dealers ,they removed the kev fuel mod and checked o2 settings and told me to run on shell v power ran fine rest of the year.
Three weeks ago cut out again ,will restart but cuts out before able to ride off. Put in bike shop again they found faults on dianostics electrical issues and relays so replaced relay and tested all ok went to pick bike up and it developed another fault and was unable to rideas cut out this time showing code 43.
They've been intouch with main yamaha technical and have been told to try something to do with injection unit test other than that they agree with bike shop that ecu has a problem which is mega expensive. Any body got any idea what else to look at have already spent�400 .thanks guys help!!!