Car won't start - 2nd cylinder full of fuel

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  • hunker7
    S2Forum Possessed
    • Mar 2014
    • 3487
    • Home: Latvia Current: United Kingdom

    #16
    Wouldn't the fuel push passed all injectors in that case?

    It should run on 4 cylinders, but maybe because 1 is leaking it can't get the pressure up?
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    • Pirvu Eugen
      S2Forum Extremist
      • Apr 2007
      • 1978
      • Country: Romania

      #17
      Leaking fpr through the vacuum hose. Ruptured Diaphragm?.

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      • hunker7
        S2Forum Possessed
        • Mar 2014
        • 3487
        • Home: Latvia Current: United Kingdom

        #18
        It's possible. I have a spare FPR and dad is sending me injectors. So I will start with replacing injector and if it doesn't run, FPR is next on my list. Because fuel is arriving, and spark is there too.
        '93 Audi 100 Avant - R.I.P
        '92 Audi UrS4 Avant - SOLD
        '93 Audi UrS4 Avant
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        • newsh
          S2Forum Obsessed
          • Aug 2003
          • 16226
          • Country: United Kingdom

          #19
          Easy to find out, pull the small vac pipe off the FPR, if it has fuel in it then there's your problem.

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          • hunker7
            S2Forum Possessed
            • Mar 2014
            • 3487
            • Home: Latvia Current: United Kingdom

            #20
            Just pulled it off and it looks dry, I sucked on it too and didn't get any fuel so that seems good.
            '93 Audi 100 Avant - R.I.P
            '92 Audi UrS4 Avant - SOLD
            '93 Audi UrS4 Avant
            '15 Audi A7 quattro 3.0 TDI

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            • Error404
              Super Moderator
              • Mar 2007
              • 19789
              • Country: United Kingdom

              #21
              Maybe the injector harness is shorting to ground. Check all the harness wiring for damage
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              • hunker7
                S2Forum Possessed
                • Mar 2014
                • 3487
                • Home: Latvia Current: United Kingdom

                #22
                I can check it, but harness looked in very good condition, and with no rips or tears when I did the engine work.
                '93 Audi 100 Avant - R.I.P
                '92 Audi UrS4 Avant - SOLD
                '93 Audi UrS4 Avant
                '15 Audi A7 quattro 3.0 TDI

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                • newsh
                  S2Forum Obsessed
                  • Aug 2003
                  • 16226
                  • Country: United Kingdom

                  #23
                  Any news?

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                  • hunker7
                    S2Forum Possessed
                    • Mar 2014
                    • 3487
                    • Home: Latvia Current: United Kingdom

                    #24
                    Waiting on postman Pat for replacement injector. Took all the spark plugs out so hopefully they'll be dry by now, and same goes for cylinders
                    '93 Audi 100 Avant - R.I.P
                    '92 Audi UrS4 Avant - SOLD
                    '93 Audi UrS4 Avant
                    '15 Audi A7 quattro 3.0 TDI

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                    • newsh
                      S2Forum Obsessed
                      • Aug 2003
                      • 16226
                      • Country: United Kingdom

                      #25
                      I reckon if one injector is stuck open it will drown the plug, then when inlets open fuel will come back out into inlet and wet the others

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                      • hunker7
                        S2Forum Possessed
                        • Mar 2014
                        • 3487
                        • Home: Latvia Current: United Kingdom

                        #26
                        Originally posted by newsh
                        I reckon if one injector is stuck open it will drown the plug, then when inlets open fuel will come back out into inlet and wet the others
                        That's a good point, because the amount of fuel spatting out of cylinder when cranking the engine was loads. And there is fuel in sump too now.
                        '93 Audi 100 Avant - R.I.P
                        '92 Audi UrS4 Avant - SOLD
                        '93 Audi UrS4 Avant
                        '15 Audi A7 quattro 3.0 TDI

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

                          #27
                          Fuel in sump evaporates fast when the oil temp rises, if you get it started up. Of course if the bottom end is full of fuel then you need to drain it out and change oils.

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                          • hunker7
                            S2Forum Possessed
                            • Mar 2014
                            • 3487
                            • Home: Latvia Current: United Kingdom

                            #28
                            Originally posted by Thuppu
                            Fuel in sump evaporates fast when the oil temp rises, if you get it started up.
                            So there is no need for oil change?
                            '93 Audi 100 Avant - R.I.P
                            '92 Audi UrS4 Avant - SOLD
                            '93 Audi UrS4 Avant
                            '15 Audi A7 quattro 3.0 TDI

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

                              #29
                              Originally posted by hunker7
                              So there is no need for oil change?
                              Not if there isn't a huge amount of fuel there.

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                              • hunker7
                                S2Forum Possessed
                                • Mar 2014
                                • 3487
                                • Home: Latvia Current: United Kingdom

                                #30
                                Originally posted by Thuppu
                                Not if there isn't a huge amount of fuel there.
                                Doesn't seem to be a lot. I'll drive a bit and check it, if needed I'll change the oil.
                                '93 Audi 100 Avant - R.I.P
                                '92 Audi UrS4 Avant - SOLD
                                '93 Audi UrS4 Avant
                                '15 Audi A7 quattro 3.0 TDI

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