YFZ450R random stall

[Wildingridin]

Last week I was driving at a local trail and my YFZ450R suddenly stalled. I tried restarting it and it took a few minutes before it was running again. I went home and it drove fine. The next day it was all good and I thought it was a random glitch in the matix. The day after it stalled 3 times in less than an hour, but the next 2 hours it ran fine. It's way too random and I can't replicate any specific conditions to see what's the problem. Anyone have an idea?

 

[RoadTested]

Last week I was driving at a local trail and my YFZ450R suddenly stalled. I tried restarting it and it took a few minutes before it was running again. I went home and it drove fine. The next day it was all good and I thought it was a random glitch in the matix. The day after it stalled 3 times in less than an hour, but the next 2 hours it ran fine. It's way too random and I can't replicate any specific conditions to see what's the problem. Anyone have an idea?

I've seen a few of my friends have the same issue like that, and it's usually a fuel problem. T
he most likely culprit is a partially clogged fuel filter or a clogged vent hose on your gas cap.
When you're riding, it'll start to starve for gas, stall out, and then, as it sits for a few minutes, enough gas trickles through to let it run again. It's a super cheap and easy place to start your troubleshooting

 

[Alan]

That’s a good place to start and I agree @RoadTested. Through the years, I’ve seen cap vents and filters cause that exact random stall, especially at elevation in Colorado, so I’d check those before chasing anything electrical.