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4.31
ELECTRONIC FUEL INJECTION
4
P
RELIMINAR
Y
V
ERS
ION
EFI Troubleshooting
Fuel Starvation / Lean Mixture
Symptoms:
Hard start or no start, bog, backfire, popping
through intake / exhaust, hesitation, detonation, low power,
spark plug erosion, engine runs hot, surging, high idle, idle
speed erratic.
• No fuel in tank
• Restricted tank vent, or routed improperly
• Fuel lines or fuel injectors restricted
• Fuel filter plugged
• Fuel pump inoperative
• Air leak in system
• Intake air leak (throttle shaft, intake ducts, airbox or air
cleaner cover)
• Incorrect throttle stop screw adjustment
Rich Mixture
Symptoms:
Fouls spark plugs, black, sooty exhaust smoke,
rough idle, poor fuel economy, engine runs rough/ misses, poor
performance, bog, engine loads up, backfire.
• Air intake restricted (inspect intake duct)
• Air filter dirty/plugged
• Poor fuel quality (old fuel)
• Fouled spark plug
• TPS setting incorrect
• Injector failure
Poor Idle
Symptom:
Idle Too High (If greater than 1300 RPM when
engine is warm)
• Throttle stop screw set incorrect
• Throttle cable sticking, improperly adjusted, routed
incorrectly
Symptom:
Idle Too Low (if less than 900 RPM when engine is
warm)
• Plugged air filter
• Leaking injector (rich condition)
• Belt dragging
• Throttle stop screw tampering
Symptom:
Erratic Idle
• Throttle cable incorrectly adjusted
• Air Leaks, dirty injector
• TPS damaged or adjusted
• Tight valves
• Ignition timing incorrect
• Belt dragging
• Dirty air cleaner
• Engine worn
• Spark Plug fouled
• Throttle stop screw set incorrectly (out of sync with
ECU)
Содержание 2010 Ranger RZR 800 EFI
Страница 16: ...NOTES GENERAL INFORMATION 1 16 ...
Страница 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 ...
Страница 53: ...3 3 ENGINE 3 P R E L I M I N A R Y V E R S I O N Oil Pump Water Pump Engine Cover Exploded View ...
Страница 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 ...
Страница 147: ...4 35 ELECTRONIC FUEL INJECTION 4 P R E L I M I N A R Y V E R S I O N Digital Wrench Feature Map ...
Страница 152: ...NOTES ELECTRONIC FUEL INJECTION 4 40 ...
Страница 192: ...NOTES BODY STEERING SUSPENSION 5 40 ...
Страница 226: ...NOTES CLUTCHING 6 34 ...
Страница 330: ...10 12 ELECTRICAL P R E L I M I N A R Y V E R S I O N INSTRUMENT CLUSTER TROUBLESHOOTING TESTS TEST 1 No All Wheel Drive ...
Страница 331: ...10 13 ELECTRICAL 10 P R E L I M I N A R Y V E R S I O N TEST 2 No Display TEST 3 Vehicle Speed Sensor ...
Страница 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 ...
Страница 337: ...10 19 ELECTRICAL 10 P R E L I M I N A R Y V E R S I O N COOLING SYSTEM SCHEMATIC Cooling System Break Out Diagram ...