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Home >> Jeep >> 2012 >> Wrangler Rubicon, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System >> Fuel Delivery, Diesel >> Standard Procedure >> Draining Fuel Tank

Draining Fuel Tank

Conventional Procedure 

NOTE:

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. Disconnect the fuel feed line (2) quick-connect fitting. Refer to FITTING, QUICK CONNECT  .
  2. Install the appropriate Fuel Line Adapters / Fitting from the (special tool #8978A, Decay Tool, Fuel). Route the opposite end of this hose to an diesel fuel draining station.
    NOTE:

    Activation of the fuel pump module may time out and need to be restarted several times to completely drain the fuel tank.

  3. Using a diagnostic scan tool, activate the fuel pump until the fuel tank is empty.

Alternative Procedure 

  1. Disconnect the negative battery cable.
  1. Raise and support vehicle. Refer to HOISTING, STANDARD PROCEDURE .
  2. Remove the fuel pump module Refer to MODULE, FUEL PUMP, REMOVAL  or MODULE, FUEL PUMP, REMOVAL .
  3. Drain fuel tank using an approved diesel fuel draining station.
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