Preliminary Checks
The following systems and components must be in good condition and operating properly before beginning diagnosis of the fuel injection system:
- All support systems and wiring.
- Battery connections and specific gravity.
- Ignition system.
- Compression pressure.
- Fuel sypply system pressure and flow.
- All electrical connections and terminals.
- Vacuum line, fuel hose and pipe connections.
NOTE:
Trouble shooting and diagnosis of fuel system should begin with determining fuel system pressure. Before performing any test on the fuel system, pressure must be released from the system.