Cooling System Troubleshooting - Honda 2003 NPS50 Ruckus Service Manual

COOLING SYSTEM
TRO U BLESHOOTING
•
Engine temperature too high
• Thermostat stuck closed
•
• Faulty radiator cap
•
Insufficient coolant
• Passage blocked in radiator, hoses or water jacket
• Air in system
Faulty water pump
•
Faulty ECT sensor
Engine temperature too low
•
• Faulty ECT sensor
Thermostat stuck open
Coolant leak
•
Deteriorated O�rings
• Faulty radiator cap
• Damaged or deteriorated cylinder head gasket
• Loose hose connection or clamp
Damaged or deteriorated hoses
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