Preliminary Checks
WARNING: This page is about a different car, the 1998 Mercury Grand Marquis and 1998 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
Ensure following systems and components are in good condition and operating properly before diagnosing problems in fuel injection system.
- Check battery and charging system condition.
- Check all wiring and vacuum connections.
- Check air cleaner and ducting.
- Check secondary ignition components.
- Check fuel delivery system.
- Check fuel tank contents and fuel gauge accuracy.
- Check for dirt, water or other contamination in fuel.
- Check fuel lines and fittings for leaks.
- Check fuel delivery system for proper pressure and volume.
- Check for inoperative fuel injectors.
- Check cooling system.
- Check inertia fuel shutoff switch.
- Check for blown head gasket (liquid in cylinder).
- Check for improperly installed electronic equipment such as anti-theft system, CB radio, cellular telephone or stereo.