
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ENGINE
TROUBLESHOOTING
Engine
Spark Plug Fouling
• Spark plug cap loose or faulty
• Incorrect spark plug heat range or gap
• PVT system calibrated incorrectly/ components worn or
mis-adjusted
• Fuel quality poor (old) or octane too high
• Low compression
• Restricted exhaust
• Weak ignition (loose coil ground, faulty coil, or stator)
• Restricted air filter (main or pre-cleaner) or breather
system
• Improperly assembled air intake system
• Restricted engine breather system
• Oil contaminated with fuel
Engine Turns Over But Fails To Start
• No fuel
• Dirt in fuel line or filter
• Fuel will not pass through fuel valve
• Fuel pump inoperative/restricted
• Tank vent plugged or pinched
• Engine flooded
• Low compression (high cylinder leakage)
• 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 supply
• Low compression
• Crankcase breather restricted
Engine Idles But Will Not Accelerate
• Spark plug fouled/weak spark
• Broken throttle cable
• Obstruction in air intake
• Air box removed (reinstall all intake components)
• Incorrect ignition timing
• Restricted exhaust system
• Cam worn excessively
Engine Has Low Power
• Spark plug fouled
• Cylinder, piston, ring, or valve wear or damage (check
compression)
• PVT not operating properly
• Restricted exhaust muffler
• Cam worn excessively
Piston Failure - Scoring
• Lack of lubrication
• Dirt entering engine through cracks in air filter or ducts
• Engine oil dirty or contaminated
Excessive Smoke and Carbon Buildup
• Excessive piston-to-cylinder clearance
• Wet sumping
• Worn rings, piston, or cylinder
• Worn valve guides or seals
• Restricted breather
• Air filter dirty or contaminated
Piston Failure - Scoring
• Lack of lubrication
• Dirt entering engine through cracks in air filter or ducts
• Engine oil dirty or contaminated
Summary of Contents for Ranger RZR SW
Page 4: ......
Page 12: ...1 8 GENERAL INFORMATION SAE Tap Drill Sizes Metric Tap Drill Sizes Decimal Equivalents ...
Page 14: ...NOTES GENERAL INFORMATION 1 10 ...
Page 48: ...NOTES MAINTENANCE 2 34 ...
Page 50: ...3 2 ENGINE ENGINE SPECIFICATIONS Crankcase Exploded Views ...
Page 51: ...3 3 ENGINE 3 Oil Pump Water Pump Engine Cover Exploded View ...
Page 52: ...3 4 ENGINE Stator Cover Starter Water Pump Oil Filter Pressure Relief Exploded View ...
Page 53: ...3 5 ENGINE 3 Cylinder Cylinder Head Piston Exploded View ...
Page 112: ...NOTES ENGINE 3 64 ...
Page 154: ...4 42 ELECTRONIC FUEL INJECTION Digital Wrench Feature Map ...
Page 192: ...NOTES BODY STEERING SUSPENSION 5 34 ...
Page 264: ...NOTES FINAL DRIVE 7 48 ...
Page 284: ...NOTES TRANSMISSION 8 20 ...
Page 324: ...10 18 ELECTRICAL COOLING SYSTEM SCHEMATIC Cooling System Break Out Diagram ...
Page 345: ......
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