Honda SPORTRAX 250X 2009 Owner's Manual page 169

０８／０８／０７ ２０：１７：３５ ３１ＨＮ６６８０ ０１６９
If Your Engine Quits or Won't Start
SYMPTOM:
POSSIBLE CAUSE
idles roughly, too
fast, stalls
poor engine
performance at
altitudes above
3,000 feet.
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)
160 Taking Care of the Unexpected
Engine starts, but runs poorly.
Check engine idle adjustment
(page 111
see your Honda dealer.
Ask your Honda dealer to modify the
carburetion with a high altitude jet.
Refer to High Altitude Carburetor
Adjustment,
See your Honda dealer.
See your Honda dealer.
See your Honda dealer.
If applicable, switch to the
recommended octane gasoline
(page 87
gasoline. If the problem persists, see
your Honda dealer.
See your Honda dealer.
See your Honda dealer.
WHAT TO DO
). If the problem persists,
page 179 .
) or change your brand of