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Home >> Chrysler >> 1991 >> New Yorker A604 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Preliminary Inspection & Adjustments >> Relieving Fuel Pressure

Relieving Fuel Pressure

  1. Remove fuel tank filler cap to relieve fuel tank pressure. Install fuel tank filler cap. Place shop towels around quick-disconnect fitting to absorb spilled fuel. Disconnect injector wiring harness.
  2. Using jumper wire, connect terminal No. 1 (ground) of injector harness to ground. Connect terminal No. 2 (positive) to positive battery terminal with second jumper wire. See Fig 1 or Fig 2 . DO NOT leave jumper wire connected to positive battery terminal longer than 5 seconds.
  3. Remove jumper wires. Pressure is now fully released. Fuel injection system can be opened and fuel carrying components removed.
Fig 1: Identifying Injector Harness Connector (4-Cylinder)
G91H08306Courtesy of CHRYSLER MOTORS.
Fig 2: Identifying Injector Harness Connector (V6)
G91J08307Courtesy of CHRYSLER MOTORS.