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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 382 (Engine Controls - Removal & Installation) >> Fuel Systems >> Fuel Tank Draining >> Siphoning The Fuel Tank

Siphoning The Fuel Tank

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The fuel flow rate from the siphon hose will range from 0.3 gal/min (1.1 L/min) up to 1 gal/min (3.8 L/min), depending on whether it is gravity siphoned or with an air-powered pump.
CAUTION: If the fuel pump is inoperative, the tank can be drained by siphoning from the tank. A suitable means is through the fuel filler pipe with the correct type and stiffness of tubing as used with the Fuel Tank Drain Hose (SA9804E). Do not attempt to insert any other type of siphon hose or tube into the fuel filler pipe. The design of the inlet check valve at the end of the fuel filler tube restricts the insertion of a hose and, most importantly, prevents the removal of this hose. If the siphon hose becomes stuck in the check valve, the fuel filler pipe will not be able to be removed from the fuel tank without damage to the fill pipe or fuel tank.
  1. Disconnect the negative battery cable. Open the fuel filler door and remove the gas cap. Insert the siphon hose guide/funnel into the fuel filler pipe.
  2. Insert the fuel tank drain hose into the guide funnel and into the fuel filler pipe. Some resistance may be encountered when the tip of the siphon hose reaches the inlet check valve. Repeated probing may be necessary to slide the hose tip through the check valve cage.
  3. Begin the fuel siphoning process. Place the fuel into an approved fuel container. Remove the siphon hose from the fuel filler pipe after draining is complete.