5.60
ENGINE
TROUBLESHOOTING
Engine
Spark Plug Fouling
• Restricted air filter (main or pre-cleaner) or breather
system
• Improperly assembled air intake system
• Restricted engine breather system
• Oil contaminated with fuel
• Fuel quality poor (old) or octane too high
• PVT system calibrated incorrectly/ components worn or
mis-adjusted
• Restricted exhaust
• Spark plug cap loose or faulty
• Incorrect spark plug heat range or gap
• Weak ignition (loose coil ground, faulty coil, or stator)
• Low compression
Engine Turns Over But Fails To Start
• No fuel
• Dirt in fuel line, filter, or injectors
• Fuel pump inoperative/restricted
• Fuel valve off or restricted flow
• Tank vent plugged or pinched
• Engine flooded
• Low compression (high cylinder leakage)
• No CPS signal (debris on CPS pole, damaged CPS
causing incorrect air gap)
• No spark (spark plug fouled) ignition component failure
Engine Does Not Turn Over
• Dead battery
• Starter motor does not turn
• Engine seized, rusted, or mechanical failure
Engine Runs But Will Not Idle
• Restricted fuel system
• Low compression (valves incorrectly adjusted)
• Crankcase breather restricted
Engine Idles But Will Not Accelerate
• Spark plug fouled / weak spark
• Broken throttle cable
• Air intake obstructed
• Air box removed (reinstall all intake components)
• Reverse speed limiter limiting speed
• Incorrect ignition timing
• Restricted exhaust system
• Camshaft worn excessively
• PVT not operating properly
Engine Has Low Power
• Spark plug fouled
• Cylinder, piston, ring, or valve wear or damage (check
compression)
• PVT not operating properly
• Restricted exhaust muffler
• Camshaft worn excessively
Piston Failure - Scoring
• Lack of lubrication
• Dirt entering engine through cracks in air filter or ducts
• Engine oil dirty or contaminated (water)
Excessive Smoke and Carbon Buildup
• Excessive piston-to-cylinder clearance
• Worn rings, piston, or cylinder
• Worn valve guides or seals
• Restricted breather
• Air filter dirty or contaminated
PartShark.com
877-999-5686
Summary of Contents for 2009 Sportsman XP 850
Page 10: ...NOTES GENERAL INFORMATION 1 10 P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 44: ...NOTES MAINTENANCE 2 34 P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 148: ...5 56 ENGINE Balance Shaft Timing P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 154: ...NOTES ENGINE 5 62 P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 202: ...NOTES CLUTCHING PVT 7 30 P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 256: ...NOTES BODY FRAME 9 10 P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 323: ...12 31 ELECTRICAL 12 Instrument Cluster Circuit P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 327: ...12 35 ELECTRICAL 12 Battery Charging Circuits P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 329: ...12 37 ELECTRICAL 12 Constant Power Circuits P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 335: ...12 43 ELECTRICAL 12 Engine Start Command Circuits P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 338: ...12 46 ELECTRICAL AWD ADC Circuits P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 341: ...12 49 ELECTRICAL 12 Radiator Fan Circuit P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 343: ...12 51 ELECTRICAL 12 Gear Selector Switch Circuit P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 356: ...WD 20 WIRE DIAGRAM 2009 SPORTSMAN XP 850 INTL EFI P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 358: ...WD 24 WIRE DIAGRAM 2009 SPORTSMAN XP 850 INTL EPS P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 367: ...WD 5 WIRE DIAGRAM 2009 SPORTSMAN XP 850 AWD ADC P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 374: ...WD 19 WIRE DIAGRAM 2009 SPORTSMAN XP 850 EFI P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 376: ...WD 23 WIRE DIAGRAM 2009 SPORTSMAN XP 850 EPS P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...