Offroad-Express

This will hopefully help others that have suffered this fate.
Last night we were driving through an intersection, accelerated away with as much gusto as a 1HDT with an auto can cope with. Suddenly some strange noises which I just can't explain. Was more of a sh sh hs h wshshs hshsh kind of noise. No heavy bangs or metal contact noises thank goodness. The engine had stopped and we were just sitting there in the middle of the road wondering what had happened.

Quickly jumped out and looked under the truck for anything suspicious. No fluids or holes. Pulled the cambelt cover off to check that the belt was still there. Turned the engine over to check that all the bits still went round. And they did. So the engine will turn over but wont fire.

Simple you say. No diesel! Thats what we are hoping. Have heard several stories of 80 series just stopping in mid stride. Something to do with the feed wire to the fuel pump solenoid earthing out.

I've given the keys to an auto sparky mate and he will hopefully let me know. Will do my best to help others avoid this problem.

Any other pearls of wisdom are most welcome!!!

Cheers

Jungle

If you still have the gold 80 George, I don't think you could go to far past the last owner as a reason for anything that goes wrong with it! (even though you have had it a few years now!)

had a similar thing with my 60, driving down the road then nothing. checked all the wiring, all appeared ok, discovered the turbo timer had blown up.

Part 2 of the saga.
So true about the last owner. Will give Joe a hard time soon.

Electrical fault would have been to easy. Deano checked it over. All power going to the right place. Damn.
Turned the engine over until it fired. 4 5 5 5 6 6 5 4 4 5 5 6 knock knock knock cough cough cough I think the work shop is on fire!!!!!!!!!!! Crap!!!

Deano got it going with it running real rough. Pumping heaps of diesel smoke into the workshop while people came running with fire extinguishes. No fire though. It has a knocking noise that matches the misfire in the engine and the puffs of smoke coming out the exhaust.

Hoping the knocking noise is just too much diesel being pumped in and not something bent. While I was there I also checked the timing marks on the cambelt and they are still in the right place. Maybe an injector pump fault?????

Will drag it round to diesel and turbo tomorrow morning and pray that Azz can help me. I need the truck for a work trip to South Island in a weeks time.

Anyone got a spare 1HDT??????

G

bummer dude

and you probably never got the chance to put the steering box in yet either

I am always paranoid that something like that will happen to me, so make sure you let us all know what the saga was, so we can try to avoid it ourselves.

bummer that someone has to be the one to find out though

Sounds like the knocks my dads truck made when the main bearings went, 1HDT like dropping there bearings.

Best way to fix it is chuck a 24v in it.

The plot thickens.

Took around to Azz's place this morning. We started it up and listened to all the noises and inhaled all the smoke.
Azz immediately pulled the cross over pipe from the turbo to the inlet manifold off and lots and lots of engine oil came dribbling out.
Then pulled the filter box to turbo inlet hose off and even more sump oil poored out. So the seals look like they have gone. Until we tried to spin the turbo inlet wheel and noticed it was no longer attached to the turbo shaft.

So the neat noise as described previously was most likely the turbo disintegrating and stopping very quickly.

Please please please, if any one has a CT26 turbo they wanna sell, make contact with me. kinda desperate!!!!!!

021 338312

Cheers
Jungle

http://www.trademe.co.nz/Trade-Me-Motor ... 728974.htm

It"s fairly local. I can pick it up and send it if you don't want to come over and pick it up.

Cheers

Jase.

I wish it was that easy. Need a diesel CT26 turbo.
The petrol CT26 has a ceramic compressor wheel that falls apart
in the diesel application. Azz has tested this one out already.

I need one off a 12HT, 13BT or 1HDT.

Stink aye. Please keep looking though.

G

I have a complete 1HDT with stuffed rings sitting in my workshop. Injector pump and turbo rebuilt not too long before the rings went. Will contact my dad and see if he wants to sell it.

Where was i up to?

Well the turbo was actually in quite good condition apart from the destroyed compressor wheel and broken shaft. Seems that the turbo had been rebuilt quite recently and had no signs of leaking seals or worn bearings. My first suggestion is that you should get your turbo's serviced after 200,000kms. I would doubt that this fault would have been picked up though. Me thinks it had a fatigue fracture in the shaft and just gave up one day.

Once the turbo had failed, lots of little bits that we couldn't find would have gone through the engine with the large amount of oil that stopped the truck. Its been compression tested to check for valve damage and bent conrods. All seems fine.

Had no luck finding another turbo and the cost of a rebuild with new parts was somewhat scarey. So i did the unthinkable. I pulled the heart out of sponge bob. That wont make a lot of sense to most of you. I have a bright yellow BJ74 which is being done up as a winch truck. I pullet the CT26 turbo off sponge bob and Azz has taken the guts out of it and rebuilt the 1HDT turbo with it plus new bearings and seals.

Hopefully back up and running soon.

Still looking for a CT26 turbo as sponge bob is no longer a runner.

Cheers
Jungle

Hey, this is kind of related, have you or Azz got any idea why the 1hdt's all seem to chuff a dark blue smoke after sitting idling for a while, followed by a big cloud when taking off afterwards??

I thought a clogged EGR, but can't find one, thought perhaps its just an accumulation of blowby oil but there's bugger all blowby, thought perhaps turbo seals weaping........ Then you started this thread

Its a common thing, you only have to follow a couple round town or have a one on a trip with you and you see then chuffing away.

Seeing as its so common, i'm wondering if there's a common solution????

I was told its an injection issue. Will ask Azz tonight as he has rebuilt a few 1HDT's.

I suffer the same problem. When I use it for work and it spends a whole day in the bush idling, the drive home is embarrassing. Smokes for a good 5 minutes on the way home.

My turbo had a worn oil ring on the exhaust side. Could have been a bit weeping past that.

G

Cheers, would be interested to know his thoughts on it.


I'm tempted to pull the intake manifold off and give it good clean out. Its almost like an accumulation of oil in the intake manifold produced from the blowby vapour, the oil drops out of vapour form and accumulates in the intake manifold during low speed running (i.e no turbo pressure to pump it straight through the engine), then when you set off, the turbo increases the pressure in the manifold and sends a slug of very oily air and maybe even a small amount of liquid oily sludge from the manifold into the engine producing the blue smoke.

Or the seals could be weaping on the turbo, and as above with the low speed running, it accumulates as there is no pressure to pump it straight through to the engine, then when you set off, it gets forced through to the engine under pressure producing the smoke. Weaping Turbo seals usually produce smoke all the time though aparently.

Anyway, let us know if yours improves after you bolt up Spongebobs turbo

Chris's did that also,after idling for a while would smoke(blue)very litely,when he took off one small puff then it would be clear(normal),was checked out ,had injectors done,comp test,leakdown test,etc all sweet.no change was the same,was well serviced also.Collecting oil in the intake is quite possable,take the intake off and have a looksy,I know some model diesels can get quite a build up in the intake manifold.

Its just one of those things when you've had the best the rest cant quite measure up

Shane (None smokey Diesel owner )

Yeah, thats my point shane, they ALL DO IT. Every 80 series i have seen does the same thing. And mines only a baby with 110k on the clock.

My "Look on the bright side" theory is that at least the inlet valves and valve seats are getting well lubricated

Yip she still blows a little after sitting still. and shes at 310 k now .

I have been thinking about puting a oil collection can in the bypass hose before the intake manafold to see how much oil is travelin down.

Jono

Yeah, i wondered about that, kind of like a water seperator on an air line.

I tried leaving the breather hose off on my old surf years ago, the fumy oily smell got me in the end so i connected it back up.

DieselBoy wrote:Cheers, would be interested to know his thoughts on it.


I'm tempted to pull the intake manifold off and give it good clean out. Its almost like an accumulation of oil in the intake manifold produced from the blowby vapour, the oil drops out of vapour form and accumulates in the intake manifold during low speed running (i.e no turbo pressure to pump it straight through the engine), then when you set off, the turbo increases the pressure in the manifold and sends a slug of very oily air and maybe even a small amount of liquid oily sludge from the manifold into the engine producing the blue smoke.

Or the seals could be weaping on the turbo, and as above with the low speed running, it accumulates as there is no pressure to pump it straight through to the engine, then when you set off, it gets forced through to the engine under pressure producing the smoke. Weaping Turbo seals usually produce smoke all the time though aparently.

Anyway, let us know if yours improves after you bolt up Spongebobs turbo

Do these engines run an EGR set-up?
If so it could very well be as you say DB. My 1KZ-TE had over 3mm radial thickness of tar like gunge inside the inlet manifold. Thats a shit load of volume reduction and oil storage.
Took over a week with a big bottlebrush and soaking in a 20l of petrol to clean it all off. Was all coming in via the EGR valve by the look of it. Wont any more though as I have not only blocked off the circut but also welded up the port into the inlet manifold inlet bowl to improve the air flow.

Mine doesn't have an EGR system that i can see (1990), its pretty well piped straight from the turbo over the block into the inlet manifold, but i bet if i pulled the manifold of it would be full of oily gunge