Isuzu Cars and Trucks 1981-1991

Diesel Fuel Filter

Print

The fuel filter is located near the battery.

REMOVAL AND INSTALLATION
  1. Properly relieve the fuel system pressure. Disconnect the negative battery cable.
  2.  
  3. Disconnect the water separator sensor wire from the connector.
  4.  
  5. Using a filter wrench, remove the fuel filter.
  6.  


NOTE
When removing the fuel filter, be careful not to spill the fuel from the cartridge.

  1. Drain the fuel cartridge and remove the sensor from the cartridge.
  2.  

To install:

  1. Lubricate the new sensor O-ring with diesel fuel and install the sensor onto the cartridge.
  2.  
  3. Lubricate the cartridge O-ring with diesel fuel. Install the cartridge until the O-ring contacts the sealing surface face, then, tighten the cartridge 2 / 3 of a turn with a filter wrench.
  4.  
  5. Connect the electrical connector to the sensor.
  6.  
  7. Depress the priming pump, located on top of the cartridge, 30 and 1940 times to fill the cartridge.
  8.  


NOTE
The pumping force will increase as the filter becomes filled.

  1. Start the engine and check for leakage around the sealing portions.
  2.  

DRAINING WATER FROM THE SYSTEM
  1. Using a 0.2L (about 1 pint) container, place it at the end of the vinyl hose, located under the drain plug of the separator.
  2.  
  3. Loosen the drain plug 5 turns.
  4.  
  5. Depress the priming pump about 10 times until the water is drained from the filter.
  6.  
  7. Tighten the drain plug.
  8.  
  9. Depress the priming pump several times.
  10.  
  11. Start the engine and check for leakage around the drain plug.
  12.  
  13. Make sure the FILTER light remains out.
  14.  

 
label.common.footer.alt.autozoneLogo