How to Replace a Fuel Filter in a Blazerby Carl PruitUpdated November 07, 2017
If you experience sluggishness or stalling in your Chevrolet Blazer, chances are it could be a dirty or clogged fuel filter. It is a fairly easy part to replace and inexpensive as well. The filter on your Blazer is designed to trap any sand or other contaminants from getting to the engine, where they can do severe damage. Filters should be changed routinely, about the same amount of time as when you do a tuneup on your Blazer. Change the filter in just a few minutes and save yourself a lot of expense and additional frustration.
Locate the fuel filter under the drivers inside the frame of the vehicle. You will see a silver cylinder that is attached to the fuel line attached to each end of the filter.
Place an empty container on the ground below the fuel filter to catch any fuel that drains out when you undo the filter. Notice the direction of the filter and how it is positioned so you can replace it the same way.
Detach the straps holding the fuel filter in place with a screwdriver. Undo the screws and pull the fuel filter and line away from the straps.
Unscrew the fuel line from the fuel filter on one side and allow the fuel to drain into the container. When it is competely drained, unscrew the other side and remove the filter from the vehicle.
Attach the new fuel filter to the fuel line by screwing one side if the filter to the line and then doing the same to the other side. Confirm that you have the fuel filter positioned in the same direction as the old one.
Reattach the straps that hold the fuel line and filter in place and verify that all connections are tight.
Start the engine and check to see if there are any leaks in the line. When you are satisfied, shut the engine off.
Remove the container from under the vehicle and pour any drained fuel back into the fuel tank.
Never have a lit cigarette or use a lighter around the area when you are removing the fuel filter.