Porsche 944 – Fuel Filter Replacement

While trying to fix my fuel starvation issues, I decided to replace my fuel filter.  Since I have no idea when the last time it was replaced was, if ever, I thought it was a good idea to get a fresh one in place.

The fuel filter is located on the passenger side of the car, in front of the gas tank in line right after the fuel pump.  Since the fuel pump is protected by a plastic cover over the gas tank, it is the only exposed fuel element (besides the fuel lines) that you can see.


Now, on to replacing that filter!

Jack the car up using the center jack point, I have my 4 ton hydraulic jack that I use for the Envoy and it fits under there nicely, one or two pumps and the car is up in the air!  Also, don’t forget to put some jack stands underneath for safety.

Once complete, you will be able to crawl yourself underneath the car and see the fuel filter.  You can use a creeper if you like, but I always find it easier to crawl.  Plus I’m too lazy to go find the creeper…..

Take a 19mm and a 17mm open ended wrench and loosen the fuel line from the front of the filter.  Be careful, fuel will spill when you remove the line.  It would be nice if you had something to catch the fuel in while it was spilling out.  I did not and the little bit that fell on the driveway would evaporate.


Now, using a flat head screwdriver, loosen the clamp that is holding the fuel filter in place.


Using the same technique that you used with the lines in the front, remove the fuel line from the back of the filter, the nut on the back side will spin on the fuel line so that will give you a hint on how this will re-assemble.

Slide the fuel filter out of the clamp.  If you had a container for fuel, as mentioned above, you may want to dump the excess fuel that is still in the line into that container.  Since I did not have one handy, evaporation was the way to go.

Reconnect the front lines to the fuel filter.  I found it much easier to connect the front lines first, then slide the fuel filter into the clamp, and then tighten the back line.

Connect the lines first

Then Slide it in!

Once all the fuel lines are tight, tighten the fuel filter clamp so that the filter is secure in its place.

Lower the car to the ground and check for fuel leaks.  It may take a minute or two for the car to start because the fuel pump will need to pump fuel back into the system.  Do not be alarmed, you probably want to turn the key to the on position and then try and start the car.  This will prime the fuel pump and make it a little easier to start.

Once the car is running, check for leaks again, I found that the back line was not tight enough when I replaced it and had to tighten it some more.  It worked fine on the second round.

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