10.
LIQUID COOLING SYSTEM
<K)KYMCO
MXU 450i
TROUBLESHOOTING
Engine won't start
• Battery voltage too
low
• Fuel level too
low
• Pinched or clogged fuel hose
• Faulty fuel
pump
operating system
• Clogged fuel injector
• Faulty spark plug
or
wrong type
• Clogged Airflow Bypass Valve
• Wet spark plug
Engine stall, hard
to
start, rough idling
• Intake air leak
• Fuel contaminated/deteriorated
• Pinched or clogged fuel hose
• Idle speed miss adjusted
• Wet spark plug
Backfiring
or
misfiring during acceleration
• Ignition system malfunction
Poor
pe1·formance (drive ability)
and
poor
fuel
economy
• Pinched
or
clogged fuel hose
• Faulty fuel injector
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