D250 3/4 Ton Pickup 2WD V8-318 5.2L VIN Y FI (1988)
Fuel Pressure Release: Service and Repair
1. Loosen gas cap and allow tank pressure to release.
2. Remove wiring harness connector from any injector, then ground one injector terminal.
3. Connect a suitable jumper wire to a second terminal, then touch the positive post of the battery for approximately 10 seconds and release system
pressure.
4. Remove jumper wires and service fuel system as required.