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  1. Join Date
    Dec 2002
    Posts
    636
    #1
    The aug issue of 4x4 Australia reviewed the used jackaroo/trooper models from 98 using the 3L 4JX1 engine. I'd like to quote some interesting points:
    1) The caterpillar HEUI system relies on oil pressure to run the injection. By 70k km, many of these holdens were hit by troubles, beginning with leaking O-ring seals for the injectors. Caterpillar provided revised O-rings for isuzu to retro-fit, and in most cases it seemed to work.
    Bottom line: anything built before Nov 3, 1999, was subject to a recall to fix it, so make sure this has been done.
    2) The type of oil used is crucial, too. The injection needs low-viscosity oil to pressurize properly, especially when the engine's cold, so the recommended 5w-30 or 5w-40 synthetic is not negotiable. The wrong oil not only makes the jackaroo hard to start, but may lead to O-ring problems.
    3) To compound the Holden's injection issues, the engine isn't very tolerant of bad diesel fuel. It can get smoky, lose performance and suffer seal failures- all the things that became difficult for subsequent high-tech diesels when they encountered our crook fuel in australia.

  2. Join Date
    Oct 2002
    Posts
    3,147
    #2
    jackaroo,

    We're safe, 2000 models na tayo and matic tranny na. Most casa horror stories (inteco QA) are those pre-2000 4JX1 models with manual tranny.

  3. Join Date
    Oct 2002
    Posts
    3,147
    #3
    I forgot to mention, 4x4 nga lang sila....

  4. Join Date
    Dec 2002
    Posts
    636
    #4
    Also glad we have biodiesel for our engines. The better lubricity of coco diesel may help lengthen the life of our injector seals.

    Do you think we can order o-ring seals from the local caterpillar distributor instead of isuzu?

  5. Join Date
    Oct 2002
    Posts
    3,147
    #5
    that biodiesel, thanks for reminding... tawagan ko nga si garyq..

    o-ring seals -- we need the specs, I'll ask if I can...

  6. Join Date
    Oct 2002
    Posts
    4,616
    #6
    wala bang adverse effect yung biodiesel sa mga injection pump and fuel delivery systems?

  7. Join Date
    Dec 2002
    Posts
    636
    #7
    mbt,

    So far biodiesel has improved performance, smoother engine- guess lubricity claims actually work.
    Try it before price goes thru the roof!

Trooper review in 4x4 australia