rs2 engine problem!(help)

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  • fatiii
    S2Forum Enthusiast
    • Nov 2010
    • 130
    • Country: Turkey

    #1

    rs2 engine problem!(help)

    Finally i managed to run the engine of my car, however i got a problem that you can see when you watch the video. The car Works well when it runs at an idle but when i step on the gas it stops.the camshaft sensor and the crank sensor are new they are not old.



    What would be the reason causing this problem in your opinion? After a long time effort and after managing to start the engine, facing this kind of problem bothers me lot.

    I look forward hearing from you, need your help!!!



    Motor: stock 3b

    ecu : vems

    Gearbox: stock

    clutche &flywheel are below:








  • quattro turbo 550bhp
    S2Forum Addict
    • Nov 2009
    • 416
    • Home: Pakistan Current: United Kingdom

    #2
    engine

    boy does that sound noisey/ruff

    Comment

    • UrS4boy
      S2Forum Obsessed
      • Feb 2006
      • 11859
      • Country: Canada

      #3
      why do you say "RS2" and then say the engine is a 3B and not an ADU?

      You have a serious miss on at least 2 cylinders. Could be plugs, coil packs, injectors, who knows.

      Can't help you too much because of VEMS.

      I know at the end it wouldn't start. With Motronic it would be because the Motronic wants > 13 RPM before it will trigger the fuel pump relay (which powers more than just the fuel pump). J17 Fuel pump relay info: http://forums.quattroworld.com/s4s6/msgs/22583.phtml Not sure if your VEMS is set up the same way.
      RS2'd 93 UrS4 5 spd sedan
      94 UrS4 V8 6 spd manual avant

      Comment

      • A80Avant
        S2Forum Obsessed
        • Sep 2005
        • 10873
        • Country: Greece

        #4
        Post your config or email it/pm it to me so I can have a look. It may be a lot of things from improper can alignment to poor enrichment etc... I didn't see the videos

        Comment

        • terrybullwon
          S2Forum Zealot
          • Mar 2006
          • 8782
          • Country: England

          #5
          Have you got oil pressure sounds like the head is dry
          Chef

          Comment

          • fatiii
            S2Forum Enthusiast
            • Nov 2010
            • 130
            • Country: Turkey

            #6
            Originally posted by UrS4boy
            why do you say "RS2" and then say the engine is a 3B and not an ADU?

            You have a serious miss on at least 2 cylinders. Could be plugs, coil packs, injectors, who knows.

            Can't help you too much because of VEMS.

            I know at the end it wouldn't start. With Motronic it would be because the Motronic wants > 13 RPM before it will trigger the fuel pump relay (which powers more than just the fuel pump). J17 Fuel pump relay info: http://forums.quattroworld.com/s4s6/msgs/22583.phtml Not sure if your VEMS is set up the same way.
            the original engine of the car was rubbish. i preffered this motor because it was the only choice here if i try to start the car with matronic would it help me to solve the problem? there is no problem on fuel pressure or on ignition. does cranc sensor or camshaft positon causes this problem?

            Comment

            • fatiii
              S2Forum Enthusiast
              • Nov 2010
              • 130
              • Country: Turkey

              #7
              Originally posted by A80Avant
              Post your config or email it/pm it to me so I can have a look. It may be a lot of things from improper can alignment to poor enrichment etc... I didn't see the videos
              i can send you pm tomorrow and would be very glad if you have a look at it

              Comment

              • fatiii
                S2Forum Enthusiast
                • Nov 2010
                • 130
                • Country: Turkey

                #8
                Originally posted by terrybullwon
                Have you got oil pressure sounds like the head is dry
                there is no problem with the oil pressure. actually the motor does not work very loudly but maybe because of the recording it sounds noisy. oil pressure seems normal.

                Comment

                • rxl
                  S2Forum Extremist
                  • May 2012
                  • 1913
                  • Country: Germany

                  #9
                  first time i see rs2 with an old 3b engine... IMO its not rs2 anymore its just an 80 avant... but good luck with your problems.

                  Comment

                  • pasbogdan
                    S2Forum Extremist
                    • Sep 2009
                    • 1160
                    • Country: Romania

                    #10
                    The sound seems valves leaking in intake.But it is not relevant in a video recording.Could be just the misfire(timing,fuel etc).Who maped it?

                    Comment

                    • fatiii
                      S2Forum Enthusiast
                      • Nov 2010
                      • 130
                      • Country: Turkey

                      #11
                      Originally posted by rxl
                      first time i see rs2 with an old 3b engine... IMO its not rs2 anymore its just an 80 avant... but good luck with your problems.
                      this is the current motor but in the future the motor may change beacuse we think to have high horse power. most probably if the car works without problem it will surely be broken down in the future and than the motor may be aby or adu again. thank you for your opinion but this car is still a rs2

                      Comment

                      • fatiii
                        S2Forum Enthusiast
                        • Nov 2010
                        • 130
                        • Country: Turkey

                        #12
                        Originally posted by pasbogdan
                        The sound seems valves leaking in intake.But it is not relevant in a video recording.Could be just the misfire(timing,fuel etc).Who maped it?
                        i also think it is bacause of the map. but the mapper does not accept this situation and blames the problem on crank sensor

                        Comment

                        • Nuno Cristiano
                          S2Forum Addict
                          • Aug 2010
                          • 421
                          • Country: Portugal

                          #13
                          Hi,

                          I have equal problems with 4 cyl engine, in VW Polo G40 too with VEMS unit.

                          Have you Scope?

                          If yes measure PWM in first injector and secound... to five.

                          I suspect you have bad configuration in Injector division by X injectors...

                          See it please
                          .: MINI Cooper D 08' :.
                          .: Audi Coupe Quattro 20V 91' :.
                          .: Audi Porsche RS2 95' :.

                          Comment

                          • Nuno Cristiano
                            S2Forum Addict
                            • Aug 2010
                            • 421
                            • Country: Portugal

                            #14
                            Send me your config file to: Info@chip-fuse.pt
                            .: MINI Cooper D 08' :.
                            .: Audi Coupe Quattro 20V 91' :.
                            .: Audi Porsche RS2 95' :.

                            Comment

                            • fatiii
                              S2Forum Enthusiast
                              • Nov 2010
                              • 130
                              • Country: Turkey

                              #15
                              Originally posted by Nuno Cristiano
                              Hi,

                              I have equal problems with 4 cyl engine, in VW Polo G40 too with VEMS unit.

                              Have you Scope?

                              If yes measure PWM in first injector and secound... to five.

                              I suspect you have bad configuration in Injector division by X injectors...

                              See it please
                              could you please explain briefly i could not understand?

                              i can send you my config tomorrow to the mail that you^ve given. by the way can g40 sensor position cause this problem?

                              Comment

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