Honda TRX250TE 2019 Owner's Manual page 196

If Your Engine Quits or Won't
Start
SYMPTOM: Engine starts, but runs poorly.
POSSIBLE CAUSE
idles roughly, too
fast, stalls
poor engine
performance at
altitudes above
1,000 m.
high oil
temperature
runs erratically,
misfires
blubbers (rich fuel
mixture)
sooty exhaust (rich
fuel mixture)
detonates or pings
under load
afterfires
(backfires)
pre-ignition (runs
on after ignition
switched OFF)
186
Taking Care of the Unexpected
WHAT TO DO
Check engine idle adjustment
(page 131). If the problem persists,
see your dealer.
Ask your dealer to modify the
carburetion with a high altitude
jet. Refer to High Altitude
Carburetor Adjustment, page 209.
Check the high oil temperature
indicator. Refer to If the High Oil
Temperature Indicator Lights,
page 193.
May damage catalytic converter.
See your dealer.
See your dealer.
See your dealer.
If applicable, switch to the
recommended octane petrol
(page 109) or change your brand
of petrol. If the problem persists,
see your dealer.
May damage catalytic converter.
See your dealer.
May damage catalytic converter.
See your dealer.