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Fuel Delivery problem

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    #1

    Fuel Delivery problem

    My 91 DX is having a little trouble at interstate speeds after a day of driving. It feels sluggish and putters a little. A couple times it backfired.
    I am going to try pulling the fuel pump next weekend, but what actually goes into doing that? Do I need special tools or lifts?
    And once I get it out, what do I look for that could be causing the problem?
    Tags: None
    #2
    Does not sound like a fuel pump issue to me, have you checked ignition timing?

    life is good.

    Comment

      #3
      Is your check engine light on?






      Comment

        #4
        Originally posted by DJ metadelic View Post
        Does not sound like a fuel pump issue to me, have you checked ignition timing?
        x2 on that and the CEL.

        If it happens to be the fuel pump, then you must drop the tank.
        Cliffs:
        Empty it.
        Jack the car up.
        Jack the tank up
        Loosen the straps holding the tank and slowly let it down, disconnecting various fuel lines as you go.
        MRT
        37.5 MPG, AC on, cruising at 80.
        30.0 MPG, AC on, aggressively driving around 90.
        27.5 MPG, no AC, cruising at 90 with occasional gridlock. 40 degrees Fahrenheit

        Lots of DIY videos specifically for our car

        Get some awesome wipers! <-- It's a DIY
        Originally posted by Tippey764
        I think driving your car naked will cause the engine to overheat
        Originally posted by deevergote
        sneaky motherfucker

        Comment

          #5
          Originally posted by GeoffMisiak View Post
          x2 on that and the CEL.

          If it happens to be the fuel pump, then you must drop the tank.
          Cliffs:
          Empty it.
          Jack the car up.
          Jack the tank up
          Loosen the straps holding the tank and slowly let it down, disconnecting various fuel lines as you go.
          I think you mean " support the tank "

          To take off the traps you're going to need to remove a peice of exhaust shielding which isn't fun at all.

          Comment

            #6
            Originally posted by Tippey764 View Post
            I think you mean " support the tank "

            To take off the traps you're going to need to remove a peice of exhaust shielding which isn't fun at all.
            well, I said cliffs for a reason
            I was just guessing in a logical order.
            MRT
            37.5 MPG, AC on, cruising at 80.
            30.0 MPG, AC on, aggressively driving around 90.
            27.5 MPG, no AC, cruising at 90 with occasional gridlock. 40 degrees Fahrenheit

            Lots of DIY videos specifically for our car

            Get some awesome wipers! <-- It's a DIY
            Originally posted by Tippey764
            I think driving your car naked will cause the engine to overheat
            Originally posted by deevergote
            sneaky motherfucker

            Comment

              #7
              I had this problem a little while ago, 2 of my 4 injectors were clogged and at higher speeds couldnt get enough fuel in.

              Comment

                #8
                ^Also very true. Assuming your injectors are unclogged and/or are operating at any given rpm properly the only other thing I've seen to do something similar to this is a HG/vac leak problem, but this doesn't sound quite the same symptoms.

                life is good.

                Comment

                  #9
                  Could also be a clog in the fule pump aswell. Thats the first place i checked.

                  Comment

                    #10
                    Originally posted by GeoffMisiak View Post
                    x2 on that and the CEL.

                    If it happens to be the fuel pump, then you must drop the tank.
                    Cliffs:
                    Empty it.
                    Jack the car up.
                    Jack the tank up
                    Loosen the straps holding the tank and slowly let it down, disconnecting various fuel lines as you go.
                    You did all of that ^^^ before trying anything else?

                    Originally posted by SPAC3MAN View Post
                    Could also be a clog in the fule pump aswell. Thats the first place i checked.
                    MRT
                    37.5 MPG, AC on, cruising at 80.
                    30.0 MPG, AC on, aggressively driving around 90.
                    27.5 MPG, no AC, cruising at 90 with occasional gridlock. 40 degrees Fahrenheit

                    Lots of DIY videos specifically for our car

                    Get some awesome wipers! <-- It's a DIY
                    Originally posted by Tippey764
                    I think driving your car naked will cause the engine to overheat
                    Originally posted by deevergote
                    sneaky motherfucker

                    Comment

                      #11
                      How come no one in here has suggested a clogged fuel filter?

                      Comment

                        #12
                        Wow guys thanks for all the input!! My CEL is on. I am going to check the codes sometime this week. I would like to avoid dropping the tank if I can so will for sure check the injectors and the filters. Can anyone point me in the right direction to find these and replacing them if they need to be replaced?
                        Many thanks!

                        Comment

                          #13
                          since your CEL is on than i recomend reading the code this will tell you wich system is going on. there is a sticky on the procedure
                          Originally posted by Gummiegorilla
                          Damn CBs are like a Rubix Cube sometimes !!!!

                          Comment

                            #14
                            Ya I saw the sticky. Gonna try that this week sometime. Crossing my fingers for something easier than having to take out the tank. Thanks for the help guys!

                            Comment

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