Polaris msx 110 Service Manual page 167

FUEL INJECTION / IGNITION / EXHAUST SYSTEMS
Troubleshooting - - Engine Lacks Performance / RPM Limits - - Continued
Indicated Problem
Air Intake System
Alternator / Charging System
ECU
Electrical Wiring Harness
PPU and ETB Operation
Exhaust System
Fuel Delivery System
ECU - - Engine Management System
Mechanical Condition of Engine
Propulsion System
Turbocharger / Charge Air Cooler
5.42
Inspection Procedure
Inspect condition of hoses and clamps.
Inspect condition of intake screen.
Inspect the intake system purge valve.
Verify at least 14 vDC present at battery ter-
minals at idle speed.
Use Digital Wrencht diagnostic software to
download any trouble codes and monitor
engine performance data.
Inspect engine and chassis electrical har-
nessess. Verify all connectors are clean
and tight.
Follow troubleshooting procedures outlined
within this chapter.
Inspect system of blockage.
Inspect system for exhaust leaks.
Inspect fuel level and fuel quality.
Verify fuel pressure meets specification.
Inspect all fuel and vent hose connections
and routings. Inspect for leaks.
Inspect all sensors for proper operation and
correct data values using Digital Wrench
diagnostic software.
Verify correct spark plug is use with correct
gap.
Check cylinder compression.
Verify impeller is not worn.
Check for driveline obstruction or worn/bro-
ken parts.
Follow troubleshooting procedures outlined
within this chapter.
Suspected Problem
2004 Four Stroke PWC Service Manual