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S6 wont start

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  • #16
    True but I'm interested to know if the fuel pump relay is actually working. I mean the relay could be closing but the contacts not making a circuit properly..

    S2 Coupe 3B Project


    Ur quattro restoration

    S2 Avant

    Boost is the new rock and roll!
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    • #17
      Originally posted by newsh View Post
      True but I'm interested to know if the fuel pump relay is actually working. I mean the relay could be closing but the contacts not making a circuit properly..
      That would be good to know but the first thing to establish is whether the fuel pump actually pumps when given 12V directly. Once that is established, the health of the very important J17 Fuel Pump relay can be checked.

      RS2'd 93 UrS4 5 spd sedan
      94 UrS4 V8 6 spd manual avant

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      • #18
        I took the fuel feed hose off and cranked the engine. I got 625ml of fuel in the container after 15 seconds. The Injectors ha power but the fuel still isn't going into the fuel rail. There is pressure at the rail but no fuel in the rail, there I fuel pressure when I pull the fuel pressure regulators out
        Last edited by audi660; 12th September 2017, 17:35.
        [SIGPIC]1997 Ur-S6 SMS Revo S

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        • #19
          When you changed the rail did you connect it backwards?

          S2 Coupe 3B Project


          Ur quattro restoration

          S2 Avant

          Boost is the new rock and roll!
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          • #20
            Originally posted by newsh View Post
            When you changed the rail did you connect it backwards?
            Exactly. There is definitely something fundamentally wrong with this story.

            C4 UrS Fuel System: From the Tank to Injectors and Back Again:

            http://forums.quattroworld.com/s4s6/msgs/226410.phtml

            RS2'd 93 UrS4 5 spd sedan
            94 UrS4 V8 6 spd manual avant

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            • #21
              Thanks for the picture, the guys that worked on my car swapped the supply and return lines around. Car starts now. Thanks for the help guys
              [SIGPIC]1997 Ur-S6 SMS Revo S

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              • #22
                Originally posted by audi660 View Post
                Thanks for the picture, the guys that worked on my car swapped the supply and return lines around. Car starts now. Thanks for the help guys
                FK me. You might want to consider using a better shop in the future.

                RS2'd 93 UrS4 5 spd sedan
                94 UrS4 V8 6 spd manual avant

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                • #23
                  Originally posted by audi660
                  Thanks for the picture, the guys that worked on my car swapped the supply and return lines around. Car starts now. Thanks for the help guys
                  The forum rocks again!


                  S2 Coupe 3B Project


                  Ur quattro restoration

                  S2 Avant

                  Boost is the new rock and roll!
                  sigpic

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                  • #24
                    Glad you found the problem

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