Bosch Fuel Pump Check Valve.

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  • Lloyd
    S2Forum Extremist
    • Apr 2006
    • 1559
    • Home: Wales Current: England

    #1

    Bosch Fuel Pump Check Valve.

    For sale, one new and unused Bosch Motorsport one way check valve.
    It will fit the 044 and other Bosch fuel pumps. £30 delivered to UK.

    Slow cold starting? Might be your check valve needs replacing.
    RS2+ (now sold...)
  • Avantus
    S2Forum Maniac
    • Sep 2007
    • 941
    • Country: Belgium

    #2
    Lloyd, can you show a picture of this valve?

    Since I mounted my 044 pump it has cold start problems since the OEM RS2 pump had that valve built inside, and not bolted on top, so every coldstart I have to keep cranking untill the fuel gets to the engine again lol.

    If it's the one I need, I'll take it

    Comment

    • Lloyd
      S2Forum Extremist
      • Apr 2006
      • 1559
      • Home: Wales Current: England

      #3
      Hi Steve,

      Here's a photo of the check valve. It's the genuine Bosch part for your 044 pump.

      There were two minor installation errors with my pump which meant that fuel was slowly leaking back into the tank. Once identified & fixed, I didn't need this part as the car now starts as is should from cold.

      HTH
      Attached Files
      RS2+ (now sold...)

      Comment

      • Lloyd
        S2Forum Extremist
        • Apr 2006
        • 1559
        • Home: Wales Current: England

        #4
        Additional picture showing the insert of the check valve.
        You can blow air/fuel through this end. You cannot via the other end (with no insert).
        Attached Files
        RS2+ (now sold...)

        Comment

        • Avantus
          S2Forum Maniac
          • Sep 2007
          • 941
          • Country: Belgium

          #5
          Thanks for the info again Lloyd, payment is on it's way

          Comment

          • Lloyd
            S2Forum Extremist
            • Apr 2006
            • 1559
            • Home: Wales Current: England

            #6
            Thanks and sold!
            RS2+ (now sold...)

            Comment

            • Thuppu
              S2Forum Freak
              • Sep 2010
              • 4115
              • Country: Finland

              #7
              Is this the part you wan't to remove if you like to rise the power level from 700 to 800hp with a single pump?

              Audi UrS4 Avant 2.5 20vt - twincharged - Project
              Audi 80q B4 Sedan 2.2 20vt - Daily user
              BMW 320d Touring e91 M-Sport - Daily user
              BMW 740iA e38 - Project

              Comment

              • Lloyd
                S2Forum Extremist
                • Apr 2006
                • 1559
                • Home: Wales Current: England

                #8
                I guess so as it's probably the smallest choke point/ID on the fuel line
                RS2+ (now sold...)

                Comment

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