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Car won't start

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by scottie 81, Aug 1, 2010.

  1. scottie 81
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    scottie 81 Member

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    [Aug 1, 2010]
    Just done head gasket on 1.9 tdi and it won't start need some help
    #1
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  3. scott b
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    scott b Active Member VCDS Map User

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    [Aug 1, 2010]
    is the engine turning over?
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  4. scottie 81
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    scottie 81 Member

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    [Aug 1, 2010]
    Yeah turns over fine
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  5. scott b
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    scott b Active Member VCDS Map User

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    [Aug 1, 2010]
    air in the fuel lines?

    crack the injecters open to let any air out
    #4
  6. paul20v
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    paul20v Audi fanatic

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    [Aug 1, 2010]
    Have you made sure there no air in the diesel system ?
    #5
  7. paul20v
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    paul20v Audi fanatic

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    [Aug 1, 2010]
    You cant crack the injectors too bleed on a PD engine
    #6
  8. scott b
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    scott b Active Member VCDS Map User

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    [Aug 1, 2010]
    learn something new every day, take it its a high presure injection unit?
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  9. paul20v
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    paul20v Audi fanatic

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    [Aug 1, 2010]
    Yes and no
    theres a tandem pump on the side of the head (which also supplies vac for brakes ) this supplies low pressure fuel to the head via a fuel porting the injectors are in the the port or fuel way thats machined into the head
    then the injectors them selves are the high pressure pumps and injectors in one .
    #8
  10. scottie 81
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    scottie 81 Member

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    [Aug 1, 2010]
    So any other sugestions
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  11. paul20v
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    paul20v Audi fanatic

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    [Aug 1, 2010]
    I take it the injector loom is plugged back in , sorry i had too ask
    how long have you been cranking ?
    also you have doubled checked timing marks .
    #10
  12. scottie 81
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    scottie 81 Member

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    [Aug 1, 2010]
    Carnking a few times for a minute or two yeah injectors are plug in timing is correct
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  13. NHN
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    NHN Retrofitter - Audi - VW - Skoda - Seat Site Sponsor VCDS Map User

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    [Aug 1, 2010]
    Is fuel from filter coming through ok when turning over engine.
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  14. scottie 81
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    scottie 81 Member

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    [Aug 1, 2010]
    Not check but did change filter yesterday but haven't connected air box sensor and the one on the air pipe to air box
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  15. paul20v
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    paul20v Audi fanatic

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    [Aug 1, 2010]
    You can turn ignition on and off repeatedly to kick the electric fuel pump in to pressure fuel around the filter as well as cranking .
    #14
  16. NHN
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    [Aug 1, 2010]
    Yeah should of remembered this as you can hear the spirting through when ignition on huh, did you prime it as such with the bleed screw on top of filter casing if thats the correct wording, in my head it is lol.
    #15

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