Preliminary Checks
The following systems and components must be in good condition and operating properly before assuming a fuel injection system malfunction.
- Air filter.
- All support systems and wiring.
- Battery connections and specific gravity.
- Compression pressure.
- Electrical connections on components and sensors.
- Emission control devices.
- Fuel system pressure and flow.
- Ignition system.
- Vacuum hose to MAP sensor.
- Vacuum line, fuel hose and pipe connections.