How do you check fuel pressure on RS2

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  • ian4455
    S2Forum Maniac
    • Nov 2010
    • 787
    • Country: England

    #1

    How do you check fuel pressure on RS2

    How do you check the fuel pressure on an RS2 ?
  • UrS4boy
    S2Forum Obsessed
    • Feb 2006
    • 11859
    • Country: Canada

    #2
    Ummm....with a fuel pressure gauge, Tee-d into the fuel line, using an adapter like the one from 034?



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

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    • ian4455
      S2Forum Maniac
      • Nov 2010
      • 787
      • Country: England

      #3
      ok thanks.

      Comment

      • S2central.net
        Retired OG Mod
        • Jul 2003
        • 16590
        • Country: Northern Ireland

        #4
        And to pre-empt the next question... on an RS2 ... you should see 3.8bar +/- manifold pressure on the fuel rail

        so at 0.5bar vacuum on idle you get 3.3bar on the fuel pressure gauge
        and at 1.5bar boost you should see 5.3bar on the fuel rail... this is pretty tricky to prove of course unless looking under the bonnet at a dyno for example... unless you have an emulator and a hand pump to fool the ECU into letting you idle with silly high fuel pressure.
        Paul Nugent
        Webmaster http://S2central.net
        Administrator http://S2forum.com

        1994 S2 Coupe ABY - aka Project Lazarus
        2001 A6 allroad 2.5TDi - family tank
        2003 S4 Avant 4.2 V8 - daily burble

        Purveyor of HomeFries and Exclusive agent for Samco hose kits (S2/RS2)

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