3L T/D Jackaroo - Tech Question

The loom is a spare part that is either required or not, when maintenance on anything up that end of the donk is done. Mine cost approx $230 when I had my valves done. Injector work (plus other issues) would necessitate the temporary removal of the loom. Holden claim that the plastic mountings for the loom get brittle, and when they try and remove it for a maintenance session, it always breaks. It needs to come out for just about any maintenance issues up there. My theory is that IF the mechanic was doing such work on his own car, he would get it out and back in without damage ! They are a bugger - special mounting/single use clips. Because they are in a hurry - (time is millions to a service department) they just break them out and charge on, knowing we will pay for the new one. One other forumite here reported finding his held in with cable ties ! Obviously because the mechanic wanted to finish the job and the new loom was not in stock !

Hi Greg.

I service my Jack and what you say is correct, the plastic clips holding the loom to the injector carriage do get brittle with age (mine is a 12/98 build) and I snapped 1 the last time I checked the valve clearances . I simply used a small cable tie to secure the plug and loom . I can see no problems with this method and will do it again if I need to . It really is no big deal and no point chucking away good dollars when one doesn't have to.

Cheers Dave L

Another issue with the wiring loom is oil seepage through the insulation of the wiring. Any damage or week point will allow oil to enter the conductive core and travel along it to the plug just off the inlet manifold where it can interfere with the connection.
This motor has a plethora of issues and I feel you should really research it in greater detail before you commit.
The engine is known as a 4JX1.

Hi Gronk, I am only upto 90 K and the clearances were within tolerance so have not had to purchase any new shims yet . That should simply be a matter checking the thickness of the existing shim and allow for the correction then purchase the required new shim.
Yes you have to remove the high presssure oil rail and it requires the correct technique when replaceing and tightening , not difficult but you have to be aware.
I replaced the O rings for all the joints and was advised by the service dept of my local holden dealer that they don't botther with the O rings . That could explain some things and that is your choice , they are not that expensive .Don't forget to fill the manifold with oil as it takes forever to "crank" the oil due to the high pressure low volume pump. I am not particularly" loyal" to any brand of vehicle that I own or owned and I endeavour to tell the truth as I know it otherwise you are screwing people around simply to stroke ones own ego . There is too much of that in this forum. Having said that I am quite happy with my Jack as I chose the vehicle for what I wanted , yes there are bigger and better. I know other Jack owners who love the car and a couple that hate the vehicle and in all honesty the haters (rightly so as they had major problems) should look at the dealers as I believe most of the problems started with dealer ignorance and stuffups when serviceing the 4JX1 cheers Dave L