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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
    Hello everyone! I recently purchased a 2008 yfz450 that I noticed is leaking coolant from the weep hole at a decent rate. I found the leak and noticed it pretty early. Was curious what all is recommended to change when I plan to have the water pump opened up to rebuild? I was planning to...
    coolant leak yfz450
  2. YFZ450 & YFZ450R General Talk
    My 04 will not stop leaking coolant. It leaks from the pipe that the radiator hose is connected to. There is an o ring in there I replaced that I thought would fix it but didn’t. I changed every seal and bearing even a new impeller shaft. It’s not leaking from the weep hole but actually where...
    coolant leak
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