QuestionCan you explain the steps to change the fuel filter on my 6.5 Diesel GMC Blazer. Do you know of an online source of viewing how -to info on trucks? Thank you
AnswerHi,
Disconnect the negative cable at the battery.
Loosen the fuel tank filler cap to relieve any fuel tank vapor
pressure.
Wrap a shop towel around the Schrader valve on the fuel rail and remove the dust cap from the valve.
Connect the fuel pressure gauge to the Schrader valve.
Install the free end of the gauge bleed hose into an approved gasoline container, and open the gauge bleed valve to relieve the fuel pressure.
Flush the fuel filter line connectors with water, and use compressed air to blow debris off and away from the connectors.
remove the fuel inlet and outlet lines from the filter following manufactor recommendations (have something around to catch gas that is in the lines and to lay the lines in while prepairing to put new filter on.
To install a new filter, begin by wiping the male tube ends of the new filter with a clean shop towel.
Apply a few drops of clean engine oil to the male tube ends on the filter.
Check the quick connectors to be sure the large collar on each connector has rotated back to the original position. The springs must be visible on the inside diameter of each quick connector.
Then install the filter in the proper direction and leave the mounting bolt slightly loose.
Install the outlet connector onto the filter outlet tube and press the connector firmly in place until the spring snaps into position.
Grasp the fuel line and try to pull this line from the filter to be sure the quick connector is locked in place.
Then, do the same with the inlet connector.
Now tighten the filter retaining bolt to the specified torque.
Once everything is connected, lower the vehicle, start the engine, and check for fuel leaks at the filter.
also a good place to find how to info and alot more is autozone.com and then select repair info from the list on the left side.
Good luck Bruce
