Preliminary Checks
The following systems and components must be in good condition and operating properly before beginning diagnosis of the fuel injection system.
- Battery connections and specific gravity
- Ignition system
- Emission control system
- Air intake system leakage
- Engine compression pressure
- Fuel supply system pressure and flow
- Fuel and vacuum lines
- Injection system component and sensor electrical connections
- Air filter
- Vacuum line, fuel hose and pipe connections