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how do you depressure the fuel system

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    how do you depressure the fuel system

    hey mangs I need to change the fuel filter on my dad's o6 grandmarquis how do I depressure the fuel system I know how to turn the fuel pump off but how do I dpressureize the fuel system any help will be great thanks mangs

    1989 mercury grand marquis gs / 2014 ford focus s daily driver
    302 lopo with ho upper/ aod with trans go shift kit
    k code 3:55 posi rear/big brake swap tow package car

    #2
    find the pressure test port, it will look like a tire valve stem stcking out of a fuel line. Just press the valve like you are checking the air in a tire and it will spit out a little fuel
    Pete ::::>>> resident LED addict and CFI defector LED bulb replacements
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      #3
      depressure the fuel system?! bah dont be a pussy!

      just turn teh key off. shove the tool in the line, turn your head away, close your eyes and remove the line, there pressure's gone.

      removing the pressure is too slow whey they only pay .2 hours for most fuel filters now.
      GMNRadio DJ, Podcast Co-Host
      1984 Ford LTD Crown Victoria - Drag Car.
      99 Ranger 2.5 - Parts hauler and Pit truck.
      03 Mustang 3.8 Convertable - Head Gaskets fukered up
      95 S10 93 Accord

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        #4
        Originally posted by seneeb View Post
        they only pay .2 hours for most fuel filters now.
        You sure are getting screwed.... around here the average is .5
        "Owning a 9-second Import is like coming out of the closet.... At first it may be surprising, but in the end, you're still gay!"


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          #5
          Smack the intertia cutout while the motor is running. It will de-pressurize real quick. Pulling the fuel pump relay while its running also will do the same thing. Should be in the power box under the hood.
          86 Lincoln Town Car (Galactica).
          5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

          91 Lincoln Mark VII LSC grandpa spec white and cranberry

          1984 Lincoln Continental TurboDiesel - rolls coal

          Originally posted by phayzer5
          I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

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            #6
            Yeah and then let the car run until it dies. Cause the engine will get no gas and cut out. And depressurize the system.

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              #7
              Originally posted by seneeb View Post
              depressure the fuel system?! bah dont be a pussy!

              just turn teh key off. shove the tool in the line, turn your head away, close your eyes and remove the line, there pressure's gone.

              removing the pressure is too slow whey they only pay .2 hours for most fuel filters now.
              x2
              1987 LTD CROWN VICTORIA, 5.0 EFI, MAGNAFLOW DUAL EXH, RED LANDAU
              FRESH AOD, 3.27 OPEN DIFF, 57K MILES, B&M SHIFT KIT AND R134A A/C


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                #8
                Originally posted by 87vicFIVEO View Post
                x2
                x3
                do you have the tool gabe?

                1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
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                please be patient, rebuilding an empire!

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                  #9
                  actually i looked at it yesterday at werk, and it's .5. but hell, you can get it done in like, 3 minutes or less without bothering to depressurize (cept on fucking explorers/mountaineers/aviators where they have like 4 covers over them.

                  ack, must get claritin, sinuses going nutzoid
                  GMNRadio DJ, Podcast Co-Host
                  1984 Ford LTD Crown Victoria - Drag Car.
                  99 Ranger 2.5 - Parts hauler and Pit truck.
                  03 Mustang 3.8 Convertable - Head Gaskets fukered up
                  95 S10 93 Accord

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                    #10
                    all right cool I'll do it this weekend

                    1989 mercury grand marquis gs / 2014 ford focus s daily driver
                    302 lopo with ho upper/ aod with trans go shift kit
                    k code 3:55 posi rear/big brake swap tow package car

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                      #11
                      do the 06's even have return lines?

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                        #12
                        Originally posted by DANARCHY View Post
                        do the 06's even have return lines?
                        Nope.


                        2006s also lack the EFI schrader valve test port....



                        Just turn the car off and let sit for about an hour or more. Most of the pressure will be gone, have a catchcan for all the extra gas that pours out.
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