GM Cutlass RWD 1970-1987 Repair Guide

Tank Assembly

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If the vehicle is to be stored for any extended length of time, the fuel should be completely drained from the system, including carburetor or throttle body, fuel pump, all fuel lines, and the fuel tank in order to prevent gum formations and poor engine performance.


CAUTION
Never drain or store gasoline in an open container due to the possibility of fire or explosion. Never siphon gasoline by mouth!

REMOVAL & INSTALLATION



  1. Disconnect the negative (-) battery cable.
  2.  
  3. Drain tank.
  4.  


WARNING
Have a carbon dioxide fire extinguisher near the work area.

  1. Use a hand-operated siphon pump, and follow the manufacturer's instructions for its use. As the fuel tank has a restrictor in the filler neck, connect the drain hose to the main fuel pipe at the fuel pump or at the tank gauge unit. Drain the fuel.
  2.  
  3. Reconnect any removed hoses, lines and cap.
  4.  
  5. Disconnect tank unit wire from connector in rear compartment.
  6.  
  7. Remove the ground wire retaining screw from the underbody.
  8.  
  9. Disconnect the hoses from the tank unit.
  10.  
  11. Support the fuel tank with a suitable jack and disconnect the two fuel tank retaining straps.
  12.  
  13. Remove the tank from the vehicle.
  14.  

To install:
  1. On California emissions equipped vehicles, center the fuel filler pipe in the opening as required. Always replace the O-ring when the tank unit has been removed.
  2.  
  3. Support the tank with a suitable jack and position the tank into the vehicle.
  4.  
  5. Connect the fuel hoses and electrical connectors before installing the tank straps.
  6.  
  7. Install the tank strap bolt and nut to 96 inch lbs. (11 Nm) and the bolt-to-body to 26 ft. lbs. (35 Nm).
  8.  
  9. Connect the negative battery cable, refill the tank, start the engine and check for leaks.
  10.  

SENDING UNIT REPLACEMENT



  1. Remove the tank as described above.
  2.  
  3. Remove the fuel gauge retaining cam, and remove the sending unit from the tank.
  4.  
  5. Installation is the reverse of removal.
  6.  

 
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