Chart 2
Starting Concerns:
- Hard Start/Long Crank
- Erratic Start/Erratic Crank
| SYSTEM/COMPONENT | REFERENCE ( PINPOINT TEST - CNG, FLEX-FUEL & GASOLINE ) unless noted |
|---|---|
| Battery Condition and Current Draw | Visual, Charging System - Refer to the appropriate GENERATORS & REGULATORS article. |
| Secondary Ignition System | For vehicles equipped with a coil pack ignition system, GO to PINPOINT TEST JC
. For all others, GO to PINPOINT TEST JB . |
| Fuel Delivery System | Natural Gas Applications: GO to B: Natural Gas Fuel Delivery System STEP HB1. All Others: GO to C: Fuel Delivery System STEP HC1. |
| Exhaust System | GO to F: Catalyst Efficiency Monitor and Exhaust Systems STEP HF5. |
| PCV System | GO to G: Positive Crankcase Ventilation (PCV) System STEP HG1. |
| EVAP System | GO to X: Evaporative Emission (EVAP) Monitor and System STEP HX14. |
| Intake Air System | GO to U: Intake Air Systems STEP HU1. |
| Starting System | Starting System - Refer to the appropriate STARTING SYSTEM article. |
| Mass Air Flow (MAF) Sensor | GO to C: Mass Air Flow Sensor STEP DC25. |
| 5.4L SC F -Series only: Check high speed fuel pump secondary circuits. |
GO to A: Fuel Pump Relay STEP KA52. |
| Additional Testing | GO to Z: Intermittent STEP Z1. |
Additional Checks:
|
Visual |