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My 2022 YFZ450R acting up

AlexanderTheGreat

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Joined
Apr 8, 2025
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3
Shifting from spending thousands on repairs to doing DIY. I just got this one a few months ago so I'm not sure why there are already issues now. When my YFZ is I don't know, 5 minutes running already and already hot, it will start acting up. At first I stopped and then let it breathe for a moment but then it idled really quickly? I thought it was the oil, so I did change the oil despite having veryyy low mileage but the problem remained. I don't know it's making really bad sounds at the moment like it's dying anytime soon. Anyone had the same experience? How did you fix it?
 
classic overheating issue and possibly a lean condition, stop babying it, check fuel air mix, valves, and actually inspect the cooling system cos just changing the oil won't fix jack if the thing's choking on heat and bad tuning.
 
classic overheating issue and possibly a lean condition, stop babying it, check fuel air mix, valves, and actually inspect the cooling system cos just changing the oil won't fix jack if the thing's choking on heat and bad tuning.
bro is also needs to stop running it. he needs to start visually inspecting intake boots for cracks, listen exactly where the noise is coming from (use a screwdriver as a stethoscope), and do some compression test
 
Rapid idle after warming up could point to an air leak or a sensor like the TPS or temp sensor acting up. If the sounds are metallic or knocking, stop riding it and dig into it further before it causes real damage.
 
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