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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 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 2015 yfz 450 2004 yfz 450 2005 yfz 450r yfz450 yfz450 help yfz450 problems yfz450 tuning yfz450r yfz450r se
  1. Maintenance
    I have done some searching across this platform and have yet to find the issue I have at hand. I purchased this quad a few weeks ago not running. Here is what I have done so far. Replaced wiring harness with OEM replacement due to hack job wiring Replaced handlebar control switch with OEM...
    2005yfz450 electrical problem no spark
  2. Maintenance
    Just got it ran one night battery was junk got a new battery put it in blew the 10 amp fuse put new fuse in and it started smoking out of the front so I quickly pulled the fuse out and now I'm trying to figure out what burnt out now there is no power won't turn over or have any lights turn on.
    electrical problem power issue smoking
  3. 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
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