Honda FOURTRAX RUBICON 2018 Owner's Manual page 230

If Your Engine Quits or Won't
Start
SYMPTOM: Engine starts, but runs poorly.
POSSIBLE CAUSE
high coolant
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)
SYMPTOM: Engine starts, but runs poorly or dies when
hot.
POSSIBLE CAUSE
poor or
inadequate fuel
flow due to
clogged fuel filter
220 Taking Care of the Unexpected
WHAT TO DO
Check the coolant temperature
gauge and high coolant
temperature indicator. Refer to If
the High Coolant Temperature
Indicator Lights, page 229.
See your dealer.
See your dealer.
See your dealer.
If applicable, switch to the
recommended octane petrol
(page 134) or change your brand
of petrol. If the problem persists,
see your dealer.
See your dealer.
See your dealer.
WHAT TO DO
See your dealer.
(ensure clean fuel supply)