Honda NRX1800 2004 Owner's Manual page 172

SYMPTOM: Engine starts, but runs poorly. (cont'd)
POSSIBLE CAUSE
sooty exhaust (rich fuel
mixture)
detonates or pings under
load
afterfires (backfires)
pre-ignition (runs on after
ignition switched OFF)
If Your Engine Quits or Won't Start
WHAT TO DO
See your Honda dealer.
If applicable, switch to the recommended octane
gasoline (page 92
gasoline. If the problem persists, see your Honda
dealer.
See your Honda dealer.
See your Honda dealer.
Taking Care of the Unexpected
) or change your brand of
163