Diesel mechanics

[AdrianF (Adrian)]

Do we have any diesel mechanics onthis forum?
Need some advice

Adrian

[mithrandir (Andrew)]

Adrian, if you can't find any, I can put you in touch with my son.

[I.C.D (Ian)]

G"Day Adrain
Moura ,is it not a coal mining town if so their should quite a few diesel mechanics working in the mines ,go down to the local pub and ask around ,I bet you will find some one who may put you in connect with someone

Ian C

[AdrianF (Adrian)]

All the diesel mechanics don't live in moura all are FiFO or DIDO. Been to the pub and can't find one, or at least none that will admit to it.

I have a 4jx1 diesel engine in a Jackaroo and have diesel getting into the radiator this is caused by one of the 'O' rings on the injector sleeve letting go. I need to remove the sleeves to replace the rings but I don't have the specialized tool to remove them.

Adrian

[I.C.D (Ian)]

Their you go Adrian I didn't know that ,I through it was like Singleton where most of them live in the town and their would be someone who could help you out .Good luck hope you find someone

Ian C

[The_bluester (Paul)]

Without wanting to put the wind up you, I would suggest getting it sorted post haste. A mate of mine had a Jackaroo which he brought over from Tassie on the ferry for another mates wedding a few years ago as well as a bit of a tour around while he was here.

The day before the wedding it had fuel in the coolant, the day after the wedding it had a toasted engine. I have never looked into it before but a workmate also had an engine failure in a Jackaroo. A bit of hunting today shows up that failures around the inejectors can also result in fuel going into the oil and if it gets bad enough to raise the oil level far enough to start putting oil/diesel mix through the breathers into the inlet then the engine can become a runaway! it wont even stop when the fuel flow stops if you switch it off. I suspect from the descriptions I got from both Jackaroo failures I know of that it is what happened to both of them.

About the only way to stop them is to crush an inlet pipe and starve it for air! Coincidentally I saw a post on facebook from a mate about doing this very recently to a Rodeo (With possibly the same 4jx1 engine) he came across revving its brains out in the middle of an intersection. I don't know how keen I would be to open the bonnet and crush an inlet pipe on a valve bouncing diesel!

A bit scary and will keep me watching the oil level on my Pathfinder although the fuel sytem works differently on that and I don't think it can do the same thing as easily. It also has a shutdown butterfly that starves the engine for air on switchoff, hopefully that actually stays shut until the engine stops completely.

[barx1963 (Malcolm)]

I used to work at a Holden dealer, not mechanics, just in accounts. But the Jackaroos were possibly the worst vehicle Holden sold since the Camira!
Nothing but problems, the warranty issues and recalls were nearly continuous.

[marki]

Originally Posted by The_bluester

Without wanting to put the wind up you, I would suggest getting it sorted post haste. A mate of mine had a Jackaroo which he brought over from Tassie on the ferry for another mates wedding a few years ago as well as a bit of a tour around while he was here.

The day before the wedding it had fuel in the coolant, the day after the wedding it had a toasted engine. I have never looked into it before but a workmate also had an engine failure in a Jackaroo. A bit of hunting today shows up that failures around the inejectors can also result in fuel going into the oil and if it gets bad enough to raise the oil level far enough to start putting oil/diesel mix through the breathers into the inlet then the engine can become a runaway! it wont even stop when the fuel flow stops if you switch it off. I suspect from the descriptions I got from both Jackaroo failures I know of that it is what happened to both of them.


About the only way to stop them is to crush an inlet pipe and starve it for air! Coincidentally I saw a post on facebook from a mate about doing this very recently to a Rodeo (With possibly the same 4jx1 engine) he came across revving its brains out in the middle of an intersection. I don't know how keen I would be to open the bonnet and crush an inlet pipe on a valve bouncing diesel!

A bit scary and will keep me watching the oil level on my Pathfinder although the fuel sytem works differently on that and I don't think it can do the same thing as easily. It also has a shutdown butterfly that starves the engine for air on switchoff, hopefully that actually stays shut until the engine stops completely.

Some of the early hilux 2.2 diesels would do this once they got a little worn out. Fuel would make its way into the sump and when it got high enough the motor would go into two stroke mode and rev it box off until it was stopped or blew up. Toyota's remedy was to change the oil every 5000km to prevent build up. We had a couple of them on site that would do it with great regularity......scares the @#$% out of you the first time iot happens.


Mark

[The_bluester (Paul)]

My reading about it found a couple of examples (Although I am sure it is just like ZD30 powered nissan Patrols, very public but not actually very common) including a Holden dealer who said he has had a couple run away during diagnosis and that it makes for "Very exciting" test drives.

It is one aspect of deisel engines I had not thought about.

[AdrianF (Adrian)]

Thanks for the advice/concerns about the Jackaroo. I am aware of the problems with the Jackaroo. I have already had the recall done for the the injectors a couple of years ago. I have found out since that the injector O rings should be replaced every 80k. I stopped driving the Jackaroo as soon as I found diesel in the radiator and have stripped the top of the motor as far as the rocker cover. Fortunately we have a second vehicle to use in the mean time.
I have heard horror stories before about the jackaroo but until the problem I am experiencing with the car at the moment we have not had any problems in 220k of motoring.
Anyway I have ordered the injector sleeves and O rings and now trying to figure out how to remove the old sleeves, looks like an 'easyout' job

Adrian

[The_bluester (Paul)]

The more I read about them the scarier they seem! Very much a first gen electronic diesel. I think I prefer the ZD30 trick of standard sort of injectors with an electronically controlled pump although when they are running right it seems they would eat a ZD30 performance wise.

None of my reading however came up with the tools or procedure to remove the sleeves. Just references to "special" tools required.

[AdrianF (Adrian)]

I have the procedure and the parts to replace the o rings just not the tool to remove the sleeves. Holden have the tool, but not for sale or loan. They won't even give me details of the tool. If I could get the specs I could make one as I have access to a full workshop(lathes, milling machines and welders)
I might have to make one a bit at a time as the workshop is 65k away


Adrian

[marki]

Originally Posted by AdrianF

I have the procedure and the parts to replace the o rings just not the tool to remove the sleeves. Holden have the tool, but not for sale or loan. They won't even give me details of the tool. If I could get the specs I could make one as I have access to a full workshop(lathes, milling machines and welders)
I might have to make one a bit at a time as the workshop is 65k away


Adrian

Have you tried the injector manufacturer? Might be worth a look. We have a friend staying over from Woollongong at the moment and she did her mechanical appreticeship with a Holden dealership. She is out and about at the moment but I will ask her when she gets back to see if she can offer any insights.

Mark

[AdrianF (Adrian)]

Originally Posted by marki

Have you tried the injector manufacturer? Might be worth a look. We have a friend staying over from Woollongong at the moment and she did her mechanical appreticeship with a Holden dealership. She is out and about at the moment but I will ask her when she gets back to see if she can offer any insights.

Mark

It's an interesting vehicle. Holden sold it in oz as a jackaroo, English and US sold them as Isuzu. They have an Isuzu engine with caterpillar designed injector. It's no problem getting the injector itself out it's the tube the injector fits Into is the problem. I have already sent email to the caterpillar company with no reply in 2 weeks.

I will remove the injector and see if I can make the tool . Never know might be a limited market for the tool.

I will wait for word from Holden trained mechanic.


Adrian

[marki]

Hi Adrian

Spoke to Gubbs (the female mechanic) and she now works for Mercedes so it has been a while. She cannot remember the tool exactly but said it would be a Kent Moore tool and the number should be listed in any proper manual so it would be a case of a google search to get a pic (number would start with KM...........). But I have done better than that with a quick search. If you go here (you will have to join by the looks of it) pics and reference numbers for the sleeve puller are towards the bottom of trhe page. Good luck with it.

http://forum.australia4wd.com/index....-step-by-step/

Mark

[AdrianF (Adrian)]

Originally Posted by marki

Hi Adrian

Spoke to Gubbs (the female mechanic) and she now works for Mercedes so it has been a while. She cannot remember the tool exactly but said it would be a Kent Moore tool and the number should be listed in any proper manual so it would be a case of a google search to get a pic (number would start with KM...........). But I have done better than that with a quick search. If you go here (you will have to join by the looks of it) pics and reference numbers for the sleeve puller are towards the bottom of trhe page. Good luck with it.

http://forum.australia4wd.com/index....-step-by-step/

Mark

Tell Gubbs I owe her a beer or equivalent.
I hink I have now found the tool I was looking for, just sent an email to Kent Moore asking the questions. And only 200$

Adrian