System Inspection
1. Visually inspect the components of the fuel delivery system.VISUAL INSPECTION CHART
Mechanical
- Loose, leaking, or damaged fuel or vacuum lines
- Leaking fuel injectors
- Adverse driveability symptoms, such as rough idle, hard to start, misses, surges, hesitates, backfires
- Insufficient fuel in fuel tank
Electrical
- Discharged battery
- Damaged connectors
- Damaged insulation
- Damaged components in the fuel system
- Blown fuse
- Tripped inertia fuel shutoff switch
2. Exercise the wiring and connectors for the solenoids and other electrical components for obvious problems due to looseness, corrosion, or other damage.
3. If a component is suspected as the obvious cause of a fault, correct the cause before proceeding to the next step.
4. If all system inspection checks are OK, proceed to the pinpoint tests.