Preventative D4D maintenance/measures.

[Bushbasher Out of control poster! Find all posts View Profile Close Bushbasher]

I don't know Roo, today it was friggin 49 degrees in the shade! Might need to put an aircon unit on top of the motor I reckon. That'll be the only way to get some cool air under the bonnet in this weather. It's now 7.30pm local time and still 41 degrees.

[krypto Avid PP Poster! Find all posts View Profile Close krypto]

Thanks for the reply, I still have not read anything that convinces me even slightly that the intercooler is the issue, others can make their own mind up on that one.

The explanation about heat build up and heat transfer makes very good sense. Both in terms of power output and added heat stress on very high tolerance components.

If the cause lay in the injector design we would have expected to see a completely redesigned injector as part of the 150 improvements that appear to have reduced failure rate.

An additional point Andrew, you seem to be holding John to much higher standards than you apply to yourself. Case in point was a recent thread when you declared tyre pressures as one of the primary and definitive causes of chassis cracking, with no real engineering based argument to back up your point.

All in all this has been a very informative thread. And in the best traditions of a pub argument there has been a bit of a p!$#ing contest.

[Bushbasher Out of control poster! Find all posts View Profile Close Bushbasher]

After parking the car for 8 hours, the EGT still reads 50 degrees. I even got a hot hand from the metal on the bullbar just trying to crack the bonnet. I don't know how to measure any heat difference pre/post bonnet scoop. The scanguage indicates usually a 1 or 2 degree reduction from it's prior reading when cruising at 110 clicks - 84/85 down from 86/87 sort of range. Around town the water temp gets up to speed pretty quickly and sits at about 83 - 84. I guess if I got a remote thermometer and hung it under the bonnet somewhere near the intercooler I could run the car with scoop open and scoop taped up and see if there's a difference following a run of a few kilometres?

[AJ120 Out of control poster! Find all posts View Profile Close AJ120]

An additional point Andrew, you seem to be holding John to much higher standards than you apply to yourself. Case in point was a recent thread when you declared tyre pressures as one of the primary and definitive causes of chassis cracking, with no real engineering based argument to back up your point.

On the contrary, I hold myself to very high standards. I don’t believe I ever said that they were a primary and definitive, In fact I said on more than one occasion that like most things it was likely due to a number of factors. I said that I thought it was a major factor, and I clearly expressed that as an opinion, I also said it was likely only part of the answer. In addition I did refer to experience and advice from other people who would have a lot of knowledge on the topic. Which is lot different to saying a top mount intercooler is a definite fix for the injector issue, and then go on to quote figures that contradict that statement.

In fact what I said is below, post 109 if you want to check. I had a number of other posts in that thread and I am happy for you to point out any place where I said otherwise, I am happy to stand by anything I have written.

Lots of interesting points of view in this thread, some I agree with, some I don't, but of everything written in this thread this stands out to me like the dogs proverbials!



With those sorts of pressures on some of the roads you have mentioned, my first thought is WOW, lucky you got away with only cracked inner gaurds!

Like most things that go wrong it is probably a combination of a number of things that have contributed to the problem, but those pressures, especially the off road pressures to me would be one of the major contributing factors.

I continue to evolve my thinking on tyre pressures, and there are many variables, but on a reasonable gravel road I would look at mid 20's, for bad roads low 20's, for horendous roads such as when I went into Mitchell falls, back into the teens and adjust speed accordingly. I have never found handling to be an issue with lower pressures assuming you adjust the speed to suit.

Cheers Andrew

Sorry for getting off topic.

Cheers Andrew

[wooley Avid PP Poster! Find all posts View Profile Close wooley]

I can't believe how easily people believe all this bullshit.

How about some facts and evidence to back up all these claims.

[pjorek Advanced Member Find all posts View Profile Close pjorek]

If the heat under TMIC is an issue it'd be interesting to compare failure rates from some of our European mates.

[Heath74 Senior Member Find all posts View Profile Close Heath74]

It's an interesting thread with some good discussion and debate. I for one share the OPs thinking.
Certainly I'd agree that all vehicles have strengths and weaknesses, we could all write long lists of specific vehicles and their issues.
But like all of us I weighed this up and decided that the Prado was the best vehicle for me. And 12 months and 30 k in I'm still very happy.
But to the original question, I have implemented a few strategies.
Firstly RACV total care lol but seriously if you do any regular remote travel I think this is a must, irrespective of injector issues.
Secondly extended warranty, I think this is a worthwhile spend and a bit of insurance.
Thirdly fuel additives and keeping a record of this. Rightly or wrongly TMC state that the issue is most likely caused by poor fuel.( yes I'm well aware that many dispute this)
Fourthly High flow muffler to contribute to lower EGT.

I think the next will be catch can, and scan guage and maybe EGT guage. And with my next service being 110km I am planning to get the valve clearances checked.

Given I'm planning to keep the car for another 3 years, I'm thinking that I'll have to treat the injectors as a consumable, and change them soon. Given the cost of this job, say close to 4k, its not an easy decision but it does seem to warrant some serious consideration.

It's like anything really you weigh up the risk and then insure accordingly. I look forward to reading what others have chosen to do.

Regards Heath

[wooley Avid PP Poster! Find all posts View Profile Close wooley]

[QUOTE=Heath74;385474
Given I'm planning to keep the car for another 3 years, I'm thinking that I'll have to treat the injectors as a consumable, and change them soon. Given the cost of this job, say close to 4k, its not an easy decision but it does seem to warrant some serious consideration.

[/QUOTE]

Mate, injectors are a consumable!

When will everyone here realise that injectors always have been and always will be a consumable!?

[AJ120 Out of control poster! Find all posts View Profile Close AJ120]

Heath, have a read here http://www.pradopoint.com/showthread...273#post379273 Particularly the posts by DocK, he paid $323 each for injectors and had them fitted for $400 by a non Toyota Diesel specialist. So thats a lot less than 4K.

I think DocK credits Skywalkerun with finding the good deal on injectors, not sure where that post is though.

Cheers Andrew

[switched Advanced Member Find all posts View Profile Close switched]

I think DocK credits Skywalkerun with finding the good deal on injectors, not sure where that post is though.

Cheers Andrew

AJ/Heath - look to Amayama Trading http://www.amayama.com/
I've personally used them for some consumables (filters etc) and also for a faulty door lock mechanism and rate their service and pricing. When I'm up for a set of injectors I will be using them.

For a bit of an idea on pricing for a 120 series 1KD-D4D (may have changed since)
*23682-30020 - Head cover seal x4 --------------- $07.81 each
*23681-30010 - Nozzle seal holder x4 ------------ $03.34 each
*96721-19017 - O-ring Seal X4 ------------------- $02.28 each
*11176-30011 - Injection Nozzle Washer X4 ------- $03.86 each
*90904-30013 - Return line washer X5 ------------ $03.51 each
*23670-39316 - Injector Assaymbly -120 series X4- $342.67 each

(Thanks to Skywalkerrun)



Cheers,
Jase

[rob_macca67 Avid PP Poster! Find all posts View Profile Close rob_macca67]

Mate, injectors are a consumable!

When will everyone here realise that injectors always have been and always will be a consumable!?

I know back in the old days it was "recommended" that u change your injectors every 100,000ks but over the years of owning Toyota Diesels (Hilux and 60's) and doing plenty of kms in them I only ever once changed my injectors once and that was in the 60's not long after buying it 2nd hand (I then installed a 2nd fuel filter) as it gave me a bit of a fright when out 4wdriving by myself. After I did this I still did not notice any difference. Back then the 2H injectors weren't that expensive at $60>$80 each and I did the job myself. Not what I call really expensive but as I said I didn't notice any difference afterwards either.... but then I ALWAYS have run dual FUEL Filters on all my diesels and never had any issues and have gotten well into the 200k+ out of them w/o changing the injectors when I eventually sold the cars......
Now, with these injectors costing so much more, I'd expect even more life out of them to.... (yeah I know, I'm probably dreaming). I'm not looking forward to ever having to change the injectors in our D4D.... I guess I'm still hoping on my past experience of running dual filters in helping to extend the life of the injectors b4 its time to move on to another 4WD..... maybe I'm dreaming, but that's what I'm hoping for......I've had the 2nd Filter (Racor brand) on since new and the filters aren't cheap, but I'm hoping it will save me down the track.

IF the injectors started to come down in price, then I might change the way I think.......

[D4Dforme Senior Member Find all posts View Profile Close D4Dforme]

AJ/Heath - look to Amayama Trading http://www.amayama.com/
I've personally used them for some consumables (filters etc) and also for a faulty door lock mechanism and rate their service and pricing. When I'm up for a set of injectors I will be using them.
For a bit of an idea on pricing (may have changed since)
*23682-30020 - Head cover seal x4 --------------- $07.81 each
*23681-30010 - Nozzle seal holder x4 ------------ $03.34 each
*96721-19017 - O-ring Seal X4 ------------------- $02.28 each
*11176-30011 - Injection Nozzle Washer X4 ------- $03.86 each
*90904-30013 - Return line washer X5 ------------ $03.51 each
*23670-39316 - Injector Assaymbly -120 series X4- $342.67 each

(Thanks to Skywalkerrun)



Cheers,
Jase

Now thats a handy post...........Thanks Jase and Skywalker for that and hopefully someone will make use of the savings to be had if need be..........Going to save this one on the favourite's just in case.

Dan

[SWR Banned Find all posts View Profile Close SWR]

Wow!!!.... Thanks guys

Thanks a million on positive feed-back for the cheap parts!.... It inspires me to look harder for cheaper alternatives

Not the sort of incentive that the workshop guys want to hear but do i care about them!!!!...... "NO!!" ... Lol

Here is the link with all torque settings and how to do the job your self if you are up for it!

diesel rattle in D4D Prado
http://www.pradopoint.com/showthread...l=1#post367945

Its personal choice on if you change the injector lines but i did not and is all extra mark-up and profits for the other guy who will hit you with the million dollar guilt line to seal the deal!...... "piece of mind".... That one line "can pull the extra money in... And usually does!

Why am i telling you this?.... Its simple!.. I don't run a workshop or have an hidden agenda on profits Lol

Link below explains on parts i chose to change.
http://www.pradopoint.com/showthread...l=1#post326903

A few other guys from this forum have also ordered parts from these guys (http://www.amayama.com/) and like my self have been happy with the parts and pricing.. (Be warned!!... Delivery is not the fastest!.. but well worth the wait!).

Here is a link on the background i did on these guys before i was to spread the word of my findings!
http://www.pradopoint.com/showthread...l=1#post368366

Cheers

[matt150 Avid PP Poster! Find all posts View Profile Close matt150]

I remember the good old days when a D11R needed a quick injector change.. Injector out, new one in... Stall the engine out until the diesel smoke cleared from the turbo and exhaust and slap it on the arse and back to work !

About an hours work !, Ahh the old days !!

[Heath74 Senior Member Find all posts View Profile Close Heath74]

Thanks for the links to the better prices for injectors. Makes the job a bit easier on the pocket.