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.