Page 194 - Manual Oficina Polaris RZR XP 1000 17-18
P. 194
ENGINE / COOLING SYSTEM
• Cylinder head gasket leak COOLING SYSTEM
• No valve clearance (cam wear) Overheating
• Cylinder or piston worn • Low coolant level
• Piston rings worn, leaking, broken, or sticking • Air in cooling system
• Bent valve or stuck valve • Wrong type/mix of coolant
• Valve spring broken or weak • Faulty pressure cap or system leaks
• Valve not seating properly (bent or carbon • Restricted system (mud or debris in radiator fins
accumulated on sealing surface) causing restriction to air flow, passages blocked in
radiator, lines, pump, or water jacket, accident
• Rocker arm sticking
damage)
Backfiring • Lean mixture (vents, fuel pump or fuel valve)
• Fuel pump output weak
• Fouled spark plug or incorrect plug or plug gap
• Electrical malfunction
• Intake system air leaks
• Water pump failure/ Loose impeller
• Exhaust system air leaks
• Valve sticking • Thermistor failure
• Ignition system faulty: • Cooling fan inoperative or turning too slowly (perform
current draw test)
• Spark plug cap cracked / broken
• Low oil level
• Ignition coil faulty
• Spark plug incorrect heat range
• Ignition or kill switch circuit faulty
• Faulty hot light circuit
• Poor connections in ignition system
• Thermostat stuck closed or not opening completely
• Ignition timing incorrect
• Radiator is missing its internal diverter plate not
• Sheared flywheel key allowing coolant to flow through entire radiator
Temperature Too Low
• Thermostat stuck open
Leak at Water Pump Weep Hole
• Faulty water pump mechanical seal (coolant leak)
• Faulty pump shaft oil seal (oil leak)
3.86 9928492 R06 - 2017-2018 RZR XP 1000 / XP4 1000 Service Manual
© Copyright Polaris Industries Inc.
