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3.62
ENGINE
P
RELIMINAR
Y
V
ERS
ION
Excessive Smoke and Carbon Buildup
• Excessive piston-to-cylinder clearance
• Wet sumping due to over-full crankcase
• Worn rings, piston, or cylinder
• Worn valve guides or seals
• Restricted breather
• Air filter dirty or contaminated
Low Compression
• Cylinder head gasket leak
• No valve clearance ( cam wear )
• Cylinder or piston worn
• Piston rings worn, leaking, broken, or sticking
• Bent valve or stuck valve
• Valve spring broken or weak
• Valve not seating properly (bent or carbon accumulated
on sealing surface)
• Rocker arm sticking
Backfiring
• Fouled spark plug or incorrect plug or plug gap
• Exhaust system air leaks
• Exhaust system air leaks
• Valve sticking
• Ignition system faulty:
Spark plug cap cracked / broken
Ignition coil faulty
Ignition or kill switch circuit faulty
Poor connections in ignition system
Ignition timing incorrect
Sheared flywheel key
Cooling System
Overheating
• Low coolant level
• Air in cooling system
• Wrong type/mix of coolant
• Faulty pressure cap or system leaks
• Restricted system (mud or debris in radiator fins
causing restriction to air flow, passages blocked in
radiator, lines, pump, or water jacket, accident damage)
• Lean mixture (vents, fuel pump or fuel valve)
• Fuel pump output weak
• Electrical malfunction
• Water pump failure/ Loose impeller
• Thermistor failure
• Cooling fan inoperative or turning too slowly (perform
current draw test)
• Low oil level
• Spark plug incorrect heat range
• Faulty hot light circuit
• Thermostat stuck closed or not opening completely
• Radiator is missing its internal diverter plate not
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)
Summary of Contents for 2010 Ranger RZR 800 EFI
Page 16: ...NOTES GENERAL INFORMATION 1 16 ...
Page 52: ...3 2 ENGINE P R E L I M I N A R Y V E R S I O N ENGINE SPECIFICATIONS Crankcase Exploded Views ...
Page 55: ...3 5 ENGINE 3 P R E L I M I N A R Y V E R S I O N Cylinder Cylinder Head Piston Exploded View ...
Page 152: ...NOTES ELECTRONIC FUEL INJECTION 4 40 ...
Page 192: ...NOTES BODY STEERING SUSPENSION 5 40 ...
Page 226: ...NOTES CLUTCHING 6 34 ...
Page 332: ...10 14 ELECTRICAL P R E L I M I N A R Y V E R S I O N TEST 4 No AWD Hub Safety Limiter ...