Circuit/System Testing
WARNING: This page is about a different variant/trim than selected.
- Verify the following conditions do not exist :
- Hoses and lines that are flattening when the engine is running, or have kinks that would restrict the flow of fuel
- Fuel leaks between the fuel tank and the fuel injection pump
- Fuel leaks in the fuel return lines
NOTE:A fuel return line that is leaking, is a good indication there is a restriction in the return system.
- If any conditions exist
Repair or replace as necessary.
- Go to next step : If no conditions exist
- Ignition OFF, disconnect the fuel supply outlet hose at the fuel filter assembly.
- Install the CH-37287-1A Fuel Pressure Gauge Adapter and attach the CH-48027 Digital Fuel Pressure Gauge.
- Ignition ON, verify the fuel pressure is between 414-550 kPa (60-80 PSI).
- If not within 414-550 kPa (60-80 PSI)
- Ignition OFF.
- Reassemble the outlet hose at the fuel filter assembly.
- Disconnect the fuel supply inlet hose at the fuel filter assembly.
- Install the CH-37287-1A Fuel Pressure Gauge Adapter and attach the CH-48027 Digital Fuel Pressure Gauge.
- Ignition ON, verify the fuel pressure is between 414-550 kPa (60-80 PSI).
- If not within 414-550 kPa (60-80 PSI), replace the G12 Fuel Pump.
- If within 414-550 kPa (60-80 PSI), replace the fuel filter.
- Go to next step : If within 414-550 kPa (60-80 PSI)
- Reassemble the hoses at the fuel filter assembly.
- Verify engine cranks and runs smoothly.
- If engine cranks but does not run or starts but runs poorly
Refer to Fuel System Diagnosis - High Pressure Side .
- Go to next step : If engine cranks and runs smoothly
- If engine cranks but does not run or starts but runs poorly
- All OK
NOTE:
It may be necessary to remove engine components for the visual inspections.