▲ 3 r/Dirtbike_Help+1 crossposts

Help with FE 450 fueling issue

At least I think it is—

Recently adjusted valves. Bike was running fine for a few rides after. Sat for a while in my shed. Replaced turn signals. They work as intended.

Afterwards took for a ride around my property— cuts out when I give it throttle. Idles fine.

Pulled everything apart again— double checked valve clearance and timing. All good. .13 intake /.17 exhaust.

No leaks in throttle body to engine or airbox.

Pulled fuel filter- no debris.

TPS was out of range- but reset it back to stock. Reset idle screw.

Reset jd tuner settings

Scanned— PO 201 injector open circuit.

Checked resistance of injector- 12 ohms (according to internet, this is good)

Checked continuity from injector plug to ecu— good. Checked from fuse to injector plug- good.

Checked body ground— tight.

Put it all back together— still bogs out with a snap of throttle. Bypassed jd tuner for stock ecu- no change. Idles at 1900-2100 rpm just fine. What gives?

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u/ta5036 — 7 days ago