A3 bkd bad diesel smoke

Discussion in 'Audi TDI forums' started by Boyce23, Nov 4, 2016.

  1. Boyce23

    Boyce23 New Member

    Joined:
    Nov 4, 2016
    Messages:
    2
    Car:
    Audi A3 bkd
    Location:
    Wakefield
    Hi I've A3 140 20ltr tdi bkd engine I'm having really bad diesel smoke on start up if I leave it ticking over if I set straight off it's ok once cars warm it's stops I've Had it on machine coming up with cylinder 1 fault I've done compression test that's fine I've changed all 4 injectors the wiring harness for injectors change stretch bolts I've done everything I can think of or should I say the garage has which is costing me loads of money can anyone shed some light as I've only had the car 6 weeks and have been ripped off o and I've had to put a full clutch in please someone must no
     
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  2. chittychittybangbang

    chittychittybangbang Administrator

    Joined:
    May 23, 2007
    Messages:
    23,816
    Car:
    2006 Jetta TDI
    Location:
    CT
    Could try adjusting the timing a tiny bit. See the FAQ article on idle adjustment on PD engines. Bad camshaft? leaky injector?
     
  3. Andrewgud

    Andrewgud New Member

    Joined:
    Sep 1, 2016
    Messages:
    7
    Car:
    2012 Audi A3 TDI
    Location:
    Kent, WA
    Hi, very new here but in search of help.... I'm working on my 2012 Audi A3 TDI, and after replacing timing belt I cant get it run. I bought all the tools and aligned marks correctly.... It would start if I crank it for long time, but I am scared to burn starter as it gets very hot. Not sure if the pulley on the fuel pump is not cooperating with timing correct and what I mean by this is there maybe open/close valve on pump that is closing and opening in wrong time ( I did aligned pin correctly with "DE" mark on pulley and fork pin) It sounds like fuel is not getting delivered to injectors
     
  4. Vwman2015

    Vwman2015 Member

    Joined:
    Oct 3, 2015
    Messages:
    291
    Car:
    Vw golf, mk5 2005 sdi, bkd engine
    Location:
    Clacton
    Sounds like the fuel pump is not totally in timing, it only has to be a nats ass out.
    Do you have vcds?
    You can check the pump in a block graph.


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  5. Andrewgud

    Andrewgud New Member

    Joined:
    Sep 1, 2016
    Messages:
    7
    Car:
    2012 Audi A3 TDI
    Location:
    Kent, WA
    What is "vcds?" and is there instructions for aligning fuel pump?
     
  6. Vwman2015

    Vwman2015 Member

    Joined:
    Oct 3, 2015
    Messages:
    291
    Car:
    Vw golf, mk5 2005 sdi, bkd engine
    Location:
    Clacton
    Vcds - vagcom diagnostic software.




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  7. Vwman2015

    Vwman2015 Member

    Joined:
    Oct 3, 2015
    Messages:
    291
    Car:
    Vw golf, mk5 2005 sdi, bkd engine
    Location:
    Clacton
    What engine code is it??


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  8. Andrewgud

    Andrewgud New Member

    Joined:
    Sep 1, 2016
    Messages:
    7
    Car:
    2012 Audi A3 TDI
    Location:
    Kent, WA
  9. Vwman2015

    Vwman2015 Member

    Joined:
    Oct 3, 2015
    Messages:
    291
    Car:
    Vw golf, mk5 2005 sdi, bkd engine
    Location:
    Clacton
    I was trying to look for the timing marks etc but I don't have it on my laptop here,

    I assume it's the same or similar set out to the CBAB engine, so I recommend you get vcds and measure the fuel blocks etc there are instructions online.

    Recheck the timing again as one tooth out on the pump with cause it not too start


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  10. Andrewgud

    Andrewgud New Member

    Joined:
    Sep 1, 2016
    Messages:
    7
    Car:
    2012 Audi A3 TDI
    Location:
    Kent, WA
    I have re-done timing belt 3 times and I'm still facing same problem. After long cranking It would start for few seconds...
     
  11. Mar4ix

    Mar4ix Member

    Joined:
    Sep 19, 2013
    Messages:
    118
    Car:
    Now audi p8, 2.0 tdi bkd, in past vw passat 2001 , 1.9 TDI , AVF
    Location:
    Ireland, Dublin
    Have you ever opened fuel lines while doing timing belt , replacing fuel filter or other reason like gain access to engine.? If yes, then more likely car wont start, as there is no fuel pressure in rail system. To gain that pressure, need to have vag com (vcds) cable, and run external pump (located in tank) for 5-10 sec, to gain a pressure in system. Not sure, might turn on ignition for 5 sec 100 times might work.
     

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