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2007 2.0 TDi 170 - reluctant to start....ideas?

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by Richardesty, Jul 9, 2012.

  1. Richardesty
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    Richardesty loves quattro

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    [Jul 9, 2012]
    My 2007 2.0 TDi 170 has 95,000 miles on the clock and has recently been some what lathargic when starting, and seems to be getting progressively worse.

    It has a full Audi service history, four new injectors, and was last serviced about 2 months ago. You may be aware from another thread that I've also recently cleaned my EGR valve.

    In my mind I ve been blaming the wet weather as its that bit worse after heavy rain.

    Sometimes takes three goes to get her to start, but when I do she runs fine!

    Any ideas?

    Rich
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  3. mm707
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    mm707 Member

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    [Jul 9, 2012]
    Mine has never started good ever since the injectors were changed, had it back to dealer, new egr but made no difference
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  4. Richardesty
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    Richardesty loves quattro

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    [Jul 10, 2012]
    Intriguing, although my last injector was replaced well over a year ago and the starting issues has only really been noted in the last couple of months....
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  5. Wrath
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    Wrath Well-Known Member

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    [Jul 10, 2012]
    My stepdad had this problem with his Leon. He changed the glowplugs and the car started immediately. Worth a try?
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  6. Richardesty
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    Richardesty loves quattro

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    [Jul 10, 2012]
    Cheers Nathan, do you know roughly how much that cost?
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  7. mm707
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    mm707 Member

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    [Jul 11, 2012]
    Get them tested first
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  8. Wrath
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    Wrath Well-Known Member

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    [Jul 11, 2012]
    I can't remember but it wasn't a huge amount, just need to get a tool to remove them. I'll try and remember to ask.
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  9. mm707
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    mm707 Member

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    [Jul 11, 2012]
    I think they are about 25 quid each ( not from main dealer ) and I also think they are ceramic so not as straight forward a job as the old metal ones.
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  10. VagPro
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    VagPro Active Member

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    [Jul 11, 2012]
    Hello Richard,

    I would recommend to test the glow plugs, (connecting to battery and see how they light up and how fast.)
    I think they are about 8£ from TPS and as far as tooling goes, I removed the ones on my 140 tdi with a normal long socket.

    If it is not the glow plugs it could also be the engine coolant temperature sensor, have you got access to vagcom? It would be usefull to see what temperature it is showing under measuring blocks.
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  11. madstaff
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    madstaff Member

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    [Jul 13, 2012]
    I wouldn't advise testing them across a battery as i'm pretty sure you'll burn them out instantly as they're only designed to work at either 5 or 7 volts (cant remember which).
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  12. hades-
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    hades- Yorkshire & Humber Rep. Regional Rep VCDS Map User

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    [Jul 13, 2012]
    changed mine starts perfect now
    i paid £7.67 from TPS inc vat as i know them
    didnt use no special tool as above long socket
    for the price they cost change them
    but could also be the CTS do you get any smoke when it starts ?
    #11
  13. mm707
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    mm707 Member

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    [Jul 13, 2012]
    Bez - Are yours ceramic plugs ?
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  14. hades-
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    hades- Yorkshire & Humber Rep. Regional Rep VCDS Map User

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    [Jul 13, 2012]
    god knows cars a 2006 B7 170
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  15. mm707
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    mm707 Member

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    [Jul 13, 2012]
    Just had a dig around and if it is a BRD engine code then they are the more expensive ceramic plugs ( and a pain in the backside ) otherwise they are metal and quite straightforward

    mine are ceramic :(
    #14
  16. VagPro
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    VagPro Active Member

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    [Jul 16, 2012]
    Hello Davees,

    Correct me if I am wrong but according to the attached wiring diagram they are 12 v (appreciate this is for a 140 2.0 Tdi)

    BPW Current flow diagram
    #15
  17. madstaff
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    madstaff Member

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    [Jul 16, 2012]
    #16
  18. SebRogers
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    SebRogers Member

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    [Jul 18, 2012]
    Sluggish starting could also be caused by a battery that's on its way out...
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  19. Paul B7
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    Paul B7 Active Member

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    [Jul 21, 2012]
    I agree with Seb and suggest you get the battery tested first.
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