Injector oil seals

[Riv39 Advanced Member Find all posts View Profile Close Riv39]

I won't be the one doing the injectors, but I will have a looky peeky at the old seals when they are pulled.

The crud buildup was rock hard gravel as you describe. It wasn't going anywhere without mechanical removal. It is just hard to see in the pics, with the film of oil over the crud buildup. Yes, we are fully expecting 1 or more seals to be leaking, based on the crud buildup on the pickup screen.

Checking the pickup has turned out to be a very handy diognostic stratagy IMO. It only takes a couple of minutes and could save many many thousands in repairs.

If owners of the D4D are concerned, I would suggest they request a visual inspection of the screen at each 10,000km service.

Davros, what symptons (if any) did the owner experience that might have suggested the start of the build up e.g. any slight puff of white smoke at start up?

I note my D4D blows some black smoke when stone cold whilst backing up my driveway etc but I assume this to be normal for a cold D4D engine.

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

I wonder if someone would be kind enough to post an explanation of exactly how to remove the sump pan, so that the screen can be easily and thoroughly inspected, including the sequence and tensions for the sump retaining bolts, and the need, ( i guess) for a sump gasket and any "additive" to be smeared on the sump gasket etc.....please

[Riv39 Advanced Member Find all posts View Profile Close Riv39]

Interesting that the article shows a picture of the 150 but only talks about the 120? This article appears to relate to buying second hand 120's not new 150's. I reckon if you showed this to a dealer they would say that only applies to a 120 D4D. Better to show the other article regarding the new Hilux.

G'day Riv,

Whats with the Pic?

Sometimes the online Articles can have a different pic. I'll have to check what pic was used in the Herald Sun when I get home cause I didn't notice that myself!

Hey Landuser, did you check the pic and see what I mean?

http://www.heraldsun.com.au/ipad/no-...-1226359199033

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

Brogers, There are a dozen or so bolts securing the sub-sump. All are very easy to get to. After removing them all, tap a thin scraper in to break the silicone seal. Don't twist the bowel when removing it....ie be careful. A warped bowl is not good.

There are another 2 bolts securing the pickup. Easy job.

Clean up all faces with a scraper. Clean off lumps of silicone from sub-sump and then clean off faces on the wire wheel on the grinder. Don't go at it too hard there either.
Replace with suitable silicone such as threebond SS1 hight temp rtv grey.

Don't tighten the bolts up too hard.... they are only 5 or 6mm and will strip out if you go at it like a bull at a gate. I tighten up a little, and then let the silicone sit there for ten or so, then nip them up.

All up, it will take about two hours including cleaning everythin up, new oil and filter.

[Landuser Junior Member Find all posts View Profile Close Landuser]

Davros, what symptons (if any) did the owner experience that might have suggested the start of the build up e.g. any slight puff of white smoke at start up?

I note my D4D blows some black smoke when stone cold whilst backing up my driveway etc but I assume this to be normal for a cold D4D engine.

Hi Riv,

On this Score, I can say that it is possible that you will get no warning! This is Scary!! One of the guys with an engine fail had NO oil pressure light come on at the time the engined siezed & stalled! not before. Makes you wonder if it is a No oil pressure light, or a low oil pressure light?

One other one we checked was totally blocked!! but still no oil pressure light ever to be seen. Scary.

Landuser

[Landuser Junior Member Find all posts View Profile Close Landuser]

Hey Landuser, did you check the pic and see what I mean?

http://www.heraldsun.com.au/ipad/no-...-1226359199033

Hey Riv, The Herald sun had a pic of a 120, but also a 150. It is different to the online article I think, The article essentially covered up to 2009, but the truth is that I can see no reason why this problem may not surface on 150s if they end up with a leak, since some of the guys are saying they might have gone back to plain copper washers? If this is true I am starting to think TMC customers are just a bunch of lab rats who are footing the bill! But even if they should be plated injector washers, who knows if this is the solution..I would suggest replacement at 40,000 Intervals may be the only secure option on this current Fuel system design.

Landuser

[Foxy48 Member Find all posts View Profile Close Foxy48]

Landuser ,Mate I think the article I looked at referred to the Hilux but with the same motor in as our Prado. The picture being discussed is right, the photo is a 150 but the description seems to be up to 2009 (120) .It seems the Hilux has had the 1KD in it for longer period than the Prado out here in NZ and Australia and it seems it is the Hilux with the 1KD that has the problem .Does this make sense? With the oil pressure I have noticed a decline in engine oil pressure from about 85psi at start and then after getting hot drops back to 45 psi and at idle to about 20psi.The lack of pressure would have to mean less oil flowing .Oil level is okay via the stick .Overall the pressure is less now than it was at new with 37K on the clock, so I'm looking forward to the 40K service and getting my guys to have a GOOD geek. This is certainly getting scary especially when you consider the near future .Cheers Foxy

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

Thankyou sir

[Landuser Junior Member Find all posts View Profile Close Landuser]

D4D Problems in the media- Prado, Hilux & Hi Ace...

Landuser ,Mate I think the article I looked at referred to the Hilux but with the same motor in as our Prado. The picture being discussed is right, the photo is a 150 but the description seems to be up to 2009 (120) .It seems the Hilux has had the 1KD in it for longer period than the Prado out here in NZ and Australia and it seems it is the Hilux with the 1KD that has the problem .Does this make sense? With the oil pressure I have noticed a decline in engine oil pressure from about 85psi at start and then after getting hot drops back to 45 psi and at idle to about 20psi.The lack of pressure would have to mean less oil flowing .Oil level is okay via the stick .Overall the pressure is less now than it was at new with 37K on the clock, so I'm looking forward to the 40K service and getting my guys to have a GOOD geek. This is certainly getting scary especially when you consider the near future .Cheers Foxy

Hi Foxy,

I have seen a News Paper media report both on Hilux, and another on the Prado. Have also seen reviews online on Hiace.

All mention the same problems of Injector leaks & clogging of screen. This is because they are all sharing D4D engine.
Somebody else said that Toyota have begun to drop the D4D badge off new models? If this is true I wonder why?

Landuser

[Gavx Junior Member Find all posts View Profile Close Gavx]

I wonder if someone would be kind enough to post an explanation of exactly how to remove the sump pan, so that the screen can be easily and thoroughly inspected, including the sequence and tensions for the sump retaining bolts, and the need, ( i guess) for a sump gasket and any "additive" to be smeared on the sump gasket etc.....please

Here is a picture from the manual

I believe the torque on the sub pan bolts is 9Nm and 8Nm on the nuts that hold the oil strainer.

Can anyone advise whether the strainer sits more or less directly under the sump plug. I have looked at those aldi cameras and not only would they barely get through the drain hole (the head is about 9mm wide) but I would not expect the hole to be big enough to handle any sort of bend in the flex cable that the camera sits on top of.

[frederick Member Find all posts View Profile Close frederick]

Gidday i have used the Aldi camera on the 120 D4D and you are correct it will not fit through hole but when you position it against hole it shows the strainer clearly. Mine was clear thank goodness,

Wazza (frederick)

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

Guys...
I've found this thread very interesting reading but also SCARY as well. We have a Nov'10 Prado with 37,000kms and can't help worrying about the future of this car as I "did" plan to keep it long term, but now I'm not so sure....
If this is a design fault like most on here believe it is, how come it's not happening to ALL D4D engines as this engine as been out here since '06 I think.... if it is a design flaw, Why is it happening to SOME and NOT ALL?
Is there anything that is common with the people who have suffered this problem? Weather Conditions - hot / cold / humid conditions? Using different oil brands instead of the same brand regularly? Not allowing the motor to warm up b4 driving it hard?
I'm no mechanic, that's for sure, but if some can help me understand as to why this happens to some and not all if it is a design fault? Has there been any 2010 onwards models that have had these issues? I'm now glad I took out that 6yr factory warranty.
A Very confused and worried person.......
rob

[Landuser Junior Member Find all posts View Profile Close Landuser]

Rob macca says-I've found this thread very interesting reading but also SCARY as well

Guys...
I've found this thread very interesting reading but also SCARY as well. We have a Nov'10 Prado with 37,000kms and can't help worrying about the future of this car as I "did" plan to keep it long term, but now I'm not so sure....
If this is a design fault like most on here believe it is, how come it's not happening to ALL D4D engines as this engine as been out here since '06 I think.... if it is a design flaw, Why is it happening to SOME and NOT ALL?
Is there anything that is common with the people who have suffered this problem? Weather Conditions - hot / cold / humid conditions? Using different oil brands instead of the same brand regularly? Not allowing the motor to warm up b4 driving it hard?
I'm no mechanic, that's for sure, but if some can help me understand as to why this happens to some and not all if it is a design fault? Has there been any 2010 onwards models that have had these issues? I'm now glad I took out that 6yr factory warranty.
A Very confused and worried person.......
rob

Hi Rob,

Firstly, the evidence online readily suggests this problem is common to Prado, Hilux & HiAce, I have seen it first hand on Hilux & Prado.

Roo & the boys I feel are way correct in that the fuelling arrangement on this engine could have been much better.

But the truth is it is Rob, With proper revised service proceedures published on the engine as it stands, More regular Injector seal replacement , say 40,000 KLM similar to that in NZ, and Easy and inexpensive oil pickup screen check at the dealer same intervals, should guarantee you will never end up with a problem in this regard.

And the reputation for this engine can be esily saved, It is a great little donk. TMC just have to tidy up the service proceedures to keep these babies running 500,000KLM plus! and it ain't hard to do!!

The only problem presently is that modified service regemes do not exist her in OZ, cars are not being checked properly for this problem here because revised service proceedures appear to not have been passed down to
to service agents, and therefore good engines can be allowed to go terminal presently.

Luckily the enthusiasts are on to this and starting to check, but what about everybody else. I feel TMC have a responsibility to these people as well.

Can I just say again that I have seen this problem on vehicles that have only every received proper Toyota genuine servicing at every interval, and these are purely highway & urban vehicles, Toyota network oil, Toytoa filters, Toyota network mechanics, Good fuel from major urban suppliers, No Oil pressure light until the engines siezed, no hint of a problem. We had one vehicle fail just 5000,klm out of its last service. But if the service agents are not cautioned on what extraordiary issues to look out for, why wouldn't they do just the typical checks.

TMC have got to get their service regemes in sinc with the nature of their product ASAP.

Landuser

P.S. Rob , if you run some of these extra checks we are talking about amongst others already documented, you probably will get a lifetime out of you Prado. They are essentially a damn good rig.

[Riv39 Advanced Member Find all posts View Profile Close Riv39]

Given 85%+ of prado 150's sold in Aus are D4D powered, one can only assume that if this is common to the current crop of D4D's then in time there will be many failures at what cost to the poor punter out there who does not know any better.

I mean how many people read this forum out of the total population of 150 D4D owners? Not many me thinks. TMC (particularly Aus) needs to pull the digit out and act now. Isn't their reputation damaged enough already?

Maybe we need a petition like the mud flaps that seemed to work. It's not a good situation to feel powerless regarding these sorts of issues on a car worth $60k+.

[Landuser Junior Member Find all posts View Profile Close Landuser]

Re.Clogged screen Riv says"We need a petition like the mud flaps that seemed to work"

Given 85%+ of prado 150's sold in Aus are D4D powered, one can only assume that if this is common to the current crop of D4D's then in time there will be many failures at what cost to the poor punter out there who does not know any better.

I mean how many people read this forum out of the total population of 150 D4D owners? Not many me thinks. TMC (particularly Aus) needs to pull the digit out and act now. Isn't their reputation damaged enough already?

Maybe we need a petition like the mud flaps that seemed to work. It's not a good situation to feel powerless regarding these sorts of issues on a car worth $60k+.

I'll second that motion Riv.

Any of you more computer literate blokes can set that up here?, You would probably guess that I will be one of the first to sign!

Landuser