The dreaded Common Rail disaster

Could just be a failed pump.

The common rail may have nothing at all to do with the failure. It sounds like you have split a piston crown and that happens without being common rail.

If there is suddenly blue smoke it indicates engine oil being where it shouldn't be. A relatively common issue with Toyota 3 litre engines.
I would expect your EGT temp to be always under 500C no matter what you do. The ECU should be programmed to hold it less than 500c if the probe is just after the turbo. Since the drop of temp across the turbo is around 200c that would mean around 700C leaving the cylinders. Far less is better.

I own a 3litre turbo diesel of another brand and it runs a Max of 430 on a hot day.
I presume the engine just had enough at 180,000km. Probably the common rail system has allowed it to get to those km instead of blowing beforehand.
I presume ALL the other engine systems, ie, cooling system was in perfect condition because it too has an effect on engine life. People blame common rail for many things without consideration of basic engine functions which also have to perform properly.
Nissan 3 litre engines do it too.

Sorry to hear about your problems, but shouldn't you be blaming the manufacturer rather than common rail. There are many light vehicle common rail engines that have gone way, way over 180000K. Many are now up in the 300000 to 400000k range and that includes the 70 series toyotas.

Some truck engine manufacturers are offering 1,000,000K warranty's and many truck engines have hit that figure without a problem before an inframe overhaul.

Old 55, I'd suggest you are more likely to have the dreaded, early 1KD-FTV engine, piston failure, rather than any common rail injection component failure.

Toyota 1KD-FTV piston failure

Cheers, Ron.

You could have a chat with Anthony, he is in Hillside Melbourne, he specialises in Toyota 3L diesels.

You can find him on PP or FB if you Google

He likes to talk about motors :)

If the car is kitted out and you intend to keep it a few more years then I would recommend a Toyota long engine replacement.
This is all new with new injectors water pump and built by Toyota.
Cost is about $8000 plus labour and misc parts. Maybe a new turbo if you get yours examined.
It’s a costly exercise on a car in the $15-20 k range but what alternative do you have.
You could try a second hand one and end up in the same boat.
Not sure how good a reconditioned one would be, you need to be sure they are thorough and highly skilled on these engines.

When you think of the price of upgrading the car to say a new or nearly new one then $8k on a new engine isn’t too bad. Just depends on the condition of the rest of it.

Good luck with what you decide.

As someone else suggested if you need some advice or help ring Anthony, he is a guru on prado engines. That’s all he does now.
I can give you his number if needed.

I'd be considering the effect of the chip before some design feature like a common rail fuel system.

Iza