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#help #suspension #yfz450 2008 2008yfz450 2017 yamaha yfz 450r 450 450r a arms aftermarket airbox ais delete backfiring battery battery issue best coilovers big 3 big bore bog carb carb conversion chain clutch coolant crank cranks wont fire up dasa ecu efi efi tunning electric issue electrical problem engine exhaust fci fci yfz450r fourwerx fuel controller fuel injected fuel programmer full exhaust graphics gytr help help please high compression high idle hmf intake jetting leak maintainance mapping maps msd msd blaster need help nerf bars new owner no spark no start oem oil parts parts review pros & cons pros and cons quad racing atv rebuild rev speed rossier sand dunes shocks sprocket stalling starting starting problem stroker stroker kit throttle transmission trinity tune tune yfz450r tuning vortex vortex ecu wiring wont start yfz yfz 450 2004 yfz 450 2005 yfz 450r yfz450 yfz450 help yfz450 problems yfz450 tuning yfz450r yfz450r se
  1. Maintenance
    Hello, I have a 2012 YFZ450R that will start up fine when cold but after it warms up it starts to run rich then eventually shuts off and dies. Fuel pump was replaced and injector was cleaned as well as fuel rail. There are times when it runs fine and the idle sounds great but eventually it...
    electrical problem fuel issue rough idle running rich stalling
  2. Maintenance
    Hello, I am new owner of a 2018 YFZ450R. I’ve been riding since a young kid but never actually did the repairs on my bikes until now. I’ve had issues with my quad for the past few months. It all started when the bike was hot after a long day of riding. Stopped to take a break then started the...
    rev stall stalling
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