4.23
FUEL INJECTION
4
FUEL SYSTEM 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 boot, gasket or
grommet)
• Throttle stop screw tampering - replace throttle body
• Failed Sensor or disconnected wiring
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
• Failed Sensor or disconnected wiring
• Throttle stop screw tampering - replace throttle body
POOR IDLE
Symptom:
Idle Too High (If greater than 1300 RPM when
engine is warm)
• Throttle stop screw tampering - replace throttle body
• Throttle cable sticking, improperly adjusted, routed
incorrectly
• Failed Sensor or disconnected wiring
• IAC stuck or inoperative
• Intake air leak
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 - replace throttle body
• Failed Sensor or disconnected wiring
Symptom:
Erratic Idle
• Throttle cable incorrectly adjusted
• Air Leaks, dirty injector
• TPS damaged or adjusted
• Tight valves
• Belt dragging
• Dirty air cleaner
• Engine worn
• Spark Plug fouled
• Throttle stop screw tampering - replace throttle body
• Failed Sensor or disconnected wiring
The correct position of the throttle body idle
stop is established and set at the factory. Do not
loosen the throttle body idle stop or alter the
stop position in any fashion. If the stop is
repositioned, the entire throttle body assembly
must be replaced.
Содержание 2007 Sportsman 450 EFI
Страница 4: ...NOTES...
Страница 20: ...NOTES GENERAL INFORMATION 1 16...
Страница 27: ...2 7 MAINTENANCE 2 LUBRICATION FLUIDS SPORTSMAN Component Locations Sportsman Only Deluxe...
Страница 58: ...2 38 MAINTENANCE Maintenance Schedule Service Date Hours Miles Service Performed Serviced By...
Страница 71: ...3 13 ENGINE 3 EH50PL Engine Exploded Views Crankshaft Cylinder and Piston Cylinder Head Crankcase Valvetrain...
Страница 78: ...3 20 ENGINE Cylinder Head Exploded View EH50PL EH50PL A...
Страница 113: ...FUEL SYSTEM 4 1 CHAPTER 4 FUEL SYSTEM 4 ELECTRONIC FUEL INJECTION 4 3 4 30 CARBURETOR SPORTSMAN 450 4 31 4 47...
Страница 114: ...4 2 FUEL SYSTEM...
Страница 138: ...4 26 FUEL INJECTION TROUBLESHOOTING DIAGRAMS EFI CIRCUIT Power On EFI CIRCUIT Crank Position Sensor...
Страница 139: ...4 27 FUEL INJECTION 4 EFI CIRCUIT Fuel Pump EFI CIRCUIT Ignition Coil...
Страница 140: ...4 28 FUEL INJECTION EFI CIRCUIT Idle Air Control EFI CIRCUIT Throttle Position Sensor...
Страница 141: ...4 29 FUEL INJECTION 4 EFI CIRCUIT Manifold Absolute Pressure Sensor EFI CIRCUIT Engine Coolant Temperature...
Страница 142: ...4 30 FUEL INJECTION EFI CIRCUIT Air Temperature Sensor EFI CIRCUIT Malfunction Indicator Light...
Страница 156: ...4 44 CARBURETOR SPORTSMAN 450 FUEL TANK FUEL DELIVERY SYSTEM Fuel System Exploded View...
Страница 185: ...5 25 BODY STEERING SUSPENSION 5 X2 CARGO BOX Exploded View...
Страница 188: ...5 28 BODY STEERING SUSPENSION X2 SEAT ASSEMBLY Exploded Views...
Страница 268: ...NOTES FINAL DRIVE 7 40...
Страница 270: ...8 2 GENERAL INFORMATION TRANSMISSION GENERAL Mounting Exploded View x2 x3 x4 x4 x2 x1 x1 x1...
Страница 276: ...8 8 GENERAL INFORMATION 242 262 262 262 262 262...
Страница 318: ...NOTES BRAKES 9 30...
Страница 337: ...10 19 ELECTRICAL 10 ALL WHEEL DRIVE AND SPEEDOMETER TROUBLESHOOTING TEST 1 No All Wheel Drive...
Страница 338: ...10 20 ELECTRICAL TEST 2 No Speedometer Display TEST 3 No Reverse Speed Limit...
Страница 339: ...10 21 ELECTRICAL 10 TEST 4 No AWD Hub Safety Limit...
Страница 340: ...10 22 ELECTRICAL TEST 5 Reverse Speed Limiter Activated In Forward Gear TEST 6 Wheel Speed Sensor...
Страница 341: ...10 23 ELECTRICAL 10 TEST 7 Fuel Gauge Display Not Working TEST 8 Shift Indicator Not Working...
Страница 347: ...10 29 ELECTRICAL 10 Components of EFI Alternator and DC CDI Ignition System...
Страница 348: ...10 30 ELECTRICAL EFI Ignition System Testing Flow Chart...
Страница 353: ...10 35 ELECTRICAL 10 PDM...
Страница 363: ...10 45 ELECTRICAL 10 Starter Lockout Diagram EFI Starter Lockout Diagram Sportsman 450...
Страница 369: ...10 51 ELECTRICAL 10 BASIC WINCH WIRING Pre wired Models...
Страница 370: ...10 52 ELECTRICAL TROUBLESHOOTING DIAGRAMS Power On EFI Start Circuit EFI To ECU Pin 12...
Страница 371: ...10 53 ELECTRICAL 10 Ignition Coil EFI Fuel Pump EFI...
Страница 372: ...10 54 ELECTRICAL Fan EFI Charging System EFI...
Страница 373: ...10 55 ELECTRICAL 10 All Wheel Drive EFI Transmission Switch EFI...
Страница 374: ...10 56 ELECTRICAL Reverse Override EFI Differential Solenoid X2...
Страница 383: ...11 3 500 EFI INTERNATIONAL QUADRICYCLE 11 Exploded View Foot Brake Supply Hand Brake Supply...
Страница 386: ...11 6 500 EFI INTERNATIONAL QUADRICYCLE 500 INTERNATIONAL QUADRICYCLE ELECTRICAL Turn Hazard Signal Diagram...
Страница 392: ...IX 6...
Страница 393: ...WD 1 WIRE DIAGRAM 2007 SPORTSMAN ACTIVE DESCENT CONTROL ADC WIRE DIAGRAM...
Страница 394: ...WD 2 WIRE DIAGRAM INTENTIONAL BLANK PAGE...
Страница 395: ...WD 3 WIRE DIAGRAM 2007 SPORTSMAN 450 WIRE DIAGRAM...
Страница 396: ...WD 4 WIRE DIAGRAM...
Страница 397: ...WD 5 WIRE DIAGRAM 2007 SPORTSMAN 500 EFI STANDARD WIRE DIAGRAM...
Страница 398: ...WD 6 WIRE DIAGRAM...
Страница 399: ...WD 7 WIRE DIAGRAM 2007 SPORTSMAN 500 EFI DELUXE WIRE DIAGRAM...
Страница 400: ...WD 8 WIRE DIAGRAM...
Страница 401: ...WD 9 WIRE DIAGRAM 2007 SPORTSMAN 500 EFI INTERNATIONAL WIRE DIAGRAM...
Страница 402: ...WD 10 WIRE DIAGRAM...
Страница 403: ...WD 11 WIRE DIAGRAM 2007 SPORTSMAN 500 EFI X2 WIRE DIAGRAM...
Страница 404: ...WD 12 WIRE DIAGRAM...
Страница 405: ...WD 13 WIRE DIAGRAM 2007 SPORTSMAN 500 EFI X2 QUADRICYCLE WIRE DIAGRAM...
Страница 406: ...WD 14 WIRE DIAGRAM...