1997 passat tdi

Discussion in 'VW Mk3 Jetta, Passat TDI and other/older diesels' started by adio8373, Aug 28, 2010.

  1. adio8373

    adio8373 New Member

    Joined:
    Mar 7, 2010
    Messages:
    34
    Car:
    1997 passat tdi sedan
    Mods:
    10,000psi boost at idle
    back at it with my tdi, 2 things:

    how can you tell which engine it is? is it part of the vin or stamped anywhere?
    can oil pumps be in spec but make gear clatter noise? i have, what sounds to be valve clatter from the top end because of lack on oil. i am going to install an oil pressure gauge at the top of the filter housing to see what its putting out. i have also heard of over heated oil coking to hydraulic lifters stopping theyre ability to compensate for lash.
    any other suggestions?

    thanks justin
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  2. chittychittybangbang

    chittychittybangbang Administrator

    Joined:
    May 23, 2007
    Messages:
    22,051
    Car:
    2006 Jetta TDI
    Location:
    CT
    It's a 1Z.

    There should be a sticker on the timing belt cover with 1Z somewhere on it but it can fall off.

    If your injection pump looks smooth like this it's definltely a 1z:
    [​IMG]

    Some jetta also had 1z but the rest had AHU. The AHU had ribs on the injection pump which made it look different from the above pump.
  3. 6eggs

    6eggs New Member

    Joined:
    Aug 10, 2007
    Messages:
    114
    Car:
    none
    Mods:
    Wyo
    The vin can tell you some equipment information but I don't think it has the engine code. Passats are definitely 1Z engines.

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