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    Fuel Filter Replacement

    I got the idea of changing my fuel filter out because it hadn't been done since I have had my car.(About 4 years) I thought I would just let everyone know what to expect!
    First Remove the fuel pump fuse #11 and let the car run until it stalls out. This gets all the fuel out of the lines. Well most of it.
    Second, there is a plastic shroud think that protects the fuel filter and exposed lines from flying stuff, I assume. There are 2 nuts to remove under the cab of the car and one screw near the outside of the car that goes between the metal fuel lines that go to the engine. I couldn't get the screw that was between the fuel lines out, it must have been rusted in or something so I just rotated the plastice shroud out so it stuck out the side of the car and was out of the way. You also may have to jack up your car. I did!
    I used a large oil drain pan to catch fuel that was still in the lines for when I removed the fuel filter. I removed the Q clamp that holds the filter in place then I removed the Q clamp that holds the fuel line to the input side of the fuel filter. This will be the side that faces the outside of the car. Fuel started coming out of the line so I let it drain for a second then I put a piece of towel over the end of the line and it stopped drainning. I then let the extra fuel from the filter flow into the drain pan. IT was taking a while so I used the plastic stops that came on the ends of my new fuel filter to stop the flow. I then undid the Q clamp on the output end of the filter and pulled the filter off the fuel line.
    When I pulled the old fuel filter out I noticed that it was the original fuel filter that came with the car. Or so I think. It said made in W Germany on the side. I assume that meant West Germany and being that my car is a 1988 when there was still an East and West I think it is the original fuel filter. That filter has been through 170k miles worth of fuel!!!
    Putting the fuel filter back on is the reverse of taking it off. IT is really easy to put back on, the lines slid right over the ends of the new filter and I was in business. Hope this helps anyone!

    #2
    Pulling the fuse for the pump is a good idea if you're doing injectors, but it doesn't help you if you're replacing the filter, as the system is set up so that the fuel doesn't drain back in the lines.
    Your best bet is to use hose clamping pliers (not sure if there is another name for them) or small vice grips on the fuel line on both ends of the filter.
    '91 318is
    sigpic

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      #3
      Oh ok cool. My manual said it should be done but I guess it is not necessary. Thanks for updating.

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        #4
        i thought that procedure was to relieve the Pressure from the system..

        also, was this the fuel filter in the engine bay? not the one next to the fuel pump, under the drivers side.. correct?

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          #5
          yeah, it's still a good idea to let the car down. Otherwise you'll have some nice pressure in the lines and it will spray out when you pull a line (assuming it hasn't been a few hours since you've driven).

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            #6
            On my car the fuel filter was underneath the body (325), but I guess the 318's have the fuel filter in the engine bay.

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              #7
              oh, ok...
              for some reason i thought there were two on e30's..

              now that i think of it, i never really have seen one in the bay..

              EDIT,

              to Add, Be sure to either have no gas in your tank, or a good flat pair of needle nose vice grips (or similar tool) to squeeze onto the lines to stop the flow of gas before you disconnect the filter.
              Last edited by 87-325ic; 06-20-2006, 05:53 AM.

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                #8
                Word advice. Fuel burns through styrofoam. GG cup.
                My drinking team, has a racing problem.

                Anyone have an aquarium? If you want fish, let me know.

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                  #9
                  Originally posted by ddongbap
                  Word advice. Fuel burns through styrofoam. GG cup.
                  Yah and thats actually how you make home-made napalm too :).

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                    #10
                    The best shit on earth.... BOOM!

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                      #11
                      Hose Pliers

                      Just take those two plastic nut off, and the screw at the corner. Then just clamp both hose down with a hose clamp. Slide the old one out and slide the new one in. Probably use a flat head to pry the hose out. If you clamp it right, no fuel will come out. this was much much easier than my e38.

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                        #12
                        i just checked Realoem lookig for the fuel filter but the diagram, and it says that these parts are not on my car. dunno am i looking at the wrong thing.

                        so can someone point me on the right direction, or say where i should find it(specifically) Thanks.

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                          #13
                          After entering the information for your car, choose "Fuel Supply" then "Fuel Feed". The last diagram should include the filter.

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                            #14
                            both of my 325 (e30s) and my 91 318 have had the fuel filter in the same spot. just near the driver side rear wheel. not sure if the m10 cars had it in the engine bay?

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                              #15
                              Most early's, engine bay under charcoal filter.
                              Most Lates under the left side of car just behind the drivers door.
                              YAya

                              1987 PRO-3 car /1990 325is (2.7i Concours)

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