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