Honda C8R600F4 Service Manual page 126

COOLING SYSTEM
TROUBLESHOOTING
Engine temperature too high
• Faulty temperature gauge or thermosensor
•Thermostat stuck closed
•Faulty radiator cap
• Insufficient coolant
• Passenges blocked in radiator, hoses or water jacket
•Air in system
•Faulty cooling fan motor
•Faulty fan motor switch
• Faulty water pump
Engine temperature too low
•Faulty temperature gauge or thermosensor
•Thermostat stuck open
• Faulty fan motor switch
Coolant leaks
•Faulty water pump mechanical seal
• Deteriorated 0-rings
• Faulty radiator cap
• Damaged or deteriorated cylinder head gasket
• Loose hose connection or clamp
• Damaged or deteriorated hoses
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