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1.6 TDCI Turbo failure, MAF or loose banjo clip?

  • 15-09-2017 11:25pm
    #1
    Dia1988
    Banned (with Prison Access) Posts: 2,252 ✭✭✭


    Hi All,

    I replaced a DPF on a 1.6 TDCI DV6 engine as it was reading a DPF partial blockage on the OBD and was in limp mode. Attempts to regenerate it was unsuccessful. 
    After fitting the DPF the codes were deleted.

    However I did notice a more pronounced "whish" noise on accelerating or revving the car which I'm guessing may be the Turbo or possibly MAF.
    See my video here:
    https://www.youtube.com/watch?v=Ui9yGlKze3Y
    I did inspect the turbine of the Turbo and there is no play in the spindle or damaged spindles.
    See my video here:
    https://www.youtube.com/watch?v=SFQsxW8M980
    On hard acceleration there is smoke coming from around the Turbo location which worst case scenario is from a faulty Turbo or could it be the banjo clip that I re-used or didn't tighten properly when attaching the dpf?
    Or could it be the MAF leaving too much/little air through?
    There is no smoke from the exhaust.
    Prior to replacing the DPF this "whish" did not persist and the car had only moved a few metres since the new dpf was fitted.
    And yes I know I shouldn't have revved the car that hard but was for demonstration purposes and yes I know the DV6 engine can be problematic.
    Any advice big or small would help.


Comments

  • #2
    rex-x
    Registered Users, Registered Users 2 Posts: 1,893 ✭✭✭rex-x


    Where the dpf is attached to the turbo under the silver heat shield is probably leaking, they are difficult to get back on just right


  • #3
    mullingar
    Registered Users, Registered Users 2 Posts: 5,340 ✭✭✭mullingar


    By replacing the dpf you have removed the excessive back pressure on the exhaust side that may have slowed the Turbo down. It does sound noisy, but hard to say via a video.

    The smoke is a different thing. It's either oil/grease burning off the new exhaust or its leaking from somewhere.

    If the Turbo oil seal is leaking on the air side it would either/or leak out of the Turbo onto the exhaust or the oil would be blown through the charged air and be combusted in the engine. What's the oil level like? Take off the pipe off the top of the Turbo and see if it's spitting oil.

    I have seen the oil feed pipe leak where it goes into the banjo fitting. Wiggle this when running to see if it's leaking too


  • #4
    Dia1988
    Banned (with Prison Access) Posts: 2,252 ✭✭✭Dia1988


    Hi,
    Thanks for replies.
    I've not had a chance to check further, but if I did not tighten the clip that secures the dpf to the side of the turbo would this cause the turbo not to function properly and the car being down on power?
    It was no longer in limp mode after I deleted the codes but from moving it a couple of metres it was down on power as well as having the "whish" sound and of course the smoke as the above video shows.
    Thanks in advance for advice!


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