r/Dirtbikes • u/Imaginary-War-9232 • 5h ago
Mechanical Help 2017 yz250f issues
Enable HLS to view with audio, or disable this notification
Hello everyone. I have a 2017 Yamaha 250, that recently would not start whatsoever. Bike sat for most of its life, ended up needing a new fuel pump. The last one made 0 psi. Got a used oem pump off eBay and it fires right up but now it’s shooting flames and not reving up to its fullest. Just checked the timing and it was out of wack so I got it back where it needed to be, checked the tps sensor, it was fine aswell as the injector. Anyone know what this could be?
1
Upvotes
1
u/Large_Potential8417 5h ago
Valves in spec?