Page 193 - Manual Oficina Polaris RZR XP 1000 17-18
P. 193
ENGINE / COOLING SYSTEM
TROUBLESHOOTING
ENGINE • Air box removed (reinstall all intake components)
Spark Plug Fouling • Incorrect ignition timing
• Spark plug cap loose or faulty • Restricted exhaust system
• Incorrect spark plug heat range or gap • Cam worn excessively
• PVTsystem calibrated incorrectly/ components worn Engine Has Low Power
or mis-adjusted
• Fuel quality poor (old) or octane too high • Spark plug fouled 3
• Low compression • Cylinder, piston, ring, or valve wear or damage (check
compression)
• Restricted exhaust
• PVT not operating properly
• Weak ignition (loose coil ground, faulty coil, or stator)
• Restricted exhaust muffler
• Restricted air filter (main or pre-cleaner) or breather
system • Cam worn excessively
• Improperly assembled air intake system
Piston Failure - Scoring
• Restricted engine breather system
• Lack of lubrication
• Oil contaminated with fuel
• Dirt entering engine through cracks in air filter or ducts
Engine Turns Over But Fails To Start • Engine oil dirty or contaminated
• No fuel Excessive Smoke and Carbon Buildup
• Dirt in fuel line or filter
• Excessive piston-to-cylinder clearance
• Fuel will not pass through fuel valve
• Wet sumping
• Fuel pump inoperative/restricted
• Worn rings, piston, or cylinder
• Tank vent plugged or pinched
• Worn valve guides or seals
• Engine flooded
• Restricted breather
• Low compression (high cylinder leakage)
• Air filter dirty or contaminated
• No spark (Spark plug fouled) ignition component
failure Piston Failure - Scoring
Engine Does Not Turn Over • Lack of lubrication
• Dead battery • Dirt entering engine through cracks in air filter or ducts
• Starter motor does not turn • Engine oil dirty or contaminated
• Engine seized, rusted, or mechanical failure Excessive Smoke and Carbon Buildup
Engine Runs But Will Not Idle • Excessive piston-to-cylinder clearance
• Restricted fuel supply • Wet sumping due to over-full crankcase
• Low compression • Worn rings, piston, or cylinder
• Crankcase breather restricted • Worn valve guides or seals
• Restricted breather
Engine Idles But Will Not Accelerate
• Air filter dirty or contaminated
• Spark plug fouled/weak spark
Low Compression
• Broken throttle cable
• Obstruction in air intake
9928492 R06 - 2017-2018 RZR XP 1000 / XP4 1000 Service Manual 3.85
© Copyright Polaris Industries Inc.
