Table of Contents
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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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Troubleshooting
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