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Home >> Jeep >> 2021 >> Grand Cherokee L Laredo, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (5.7L - Fuel System) >> Fuel Delivery, Gas >> Standard Procedure >> Draining Fuel Tank >> Conventional Procedure

Conventional Procedure

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WARNING:

The fuel system may be under constant fuel pressure even with the engine off. This pressure must be released before servicing the fuel tank.

Due to a one-way check valve installed into the fuel fill fitting at the tank, the tank cannot be drained at the fuel fill cap.

  1. Perform the fuel system pressure release procedure. Refer to FUEL SYSTEM PRESSURE RELEASE  .
  2. Disconnect the fuel supply line from the fuel rail. Refer to QUICK CONNECT FITTINGS  .
    GC0143911Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    Tool number 8978-2 is used on 5/16" fuel lines while tool number 8531-1 is used on 3/8" fuel lines.

  3. Install the appropriate fuel line adapter fitting from the Decay Tool, Fuel 8978A to the fuel supply line. Route the opposite end of this hose to an OSHA approved fuel storage tank such as the John Dow Gas Caddy 320-FC-P30-A or equivalent.
  4. Using a diagnostic scan tool, activate the fuel pump until the fuel tank has been evacuated.