Download Print this page

Efi Troubleshooting - Polaris RZR XP 1000 Service Manual

Hide thumbs

Advertisement

Table of Contents

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, air box
cover)
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
• Injector failure
Poor Idle
Symptom: Idle Too High (if > 1400 RPM when warm).
• Throttle stop screw tampering
• Throttle cable sticking, improperly adjusted, routed
incorrectly
• Faulty electrical connection
Symptom: Idle Too Low (if < 1100 RPM when 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
• TMAP damaged (check with Digital Wrench®)
• Tight valves (low compression or high leakdown)
9925724 R01 - 2014-2015 RZR XP 1000 / RZR XP4 1000 Service Manual
© Copyright 2014 Polaris Industries Inc.
• Ignition timing incorrect
• Belt dragging
• Dirty air filter
• High percentage of cylinder leakdown (worn
engine)
• Low compression (worn engine)
• Spark plug(s) fouled
• Spark plug wires loose or worn
• Faulty electrical connection
FUEL SYSTEM
4.45
4

Advertisement

Table of Contents
loading

This manual is also suitable for:

Rzr xp4 1000