diesel rattle in D4D Prado

[Trogan]

I've just convinced Toyota to give me new injectors under new car warranty for my D4D (92k just under 3 years old). However they tell me it may take up to 3 months before I get them. Does anyone know if driving with dodgy injectors will do any damage. I'm using 20% more fuel than normal so a little concerned.

[mav]

I've just convinced Toyota to give me new injectors under new car warranty for my D4D (92k just under 3 years old). However they tell me it may take up to 3 months before I get them. Does anyone know if driving with dodgy injectors will do any damage. I'm using 20% more fuel than normal so a little concerned.

It just depends on how the injectors are failing, one of mine stopped delivering any fuel but others continued to drip fuel causing a predetonation in the pot. The dripping injectos are the ones to worry about.

I have two injectors that are borderline on their specs but Toyota are refusing to swap them out, well they were before the Toyota warranty expired. I suspect now that the warranty is being provided by Swann that Toyota will be only too happy to swap them out now they are not paying for it.

[CJ]

I've had the problem since the 40k service. Its worse during winter but still there during summer. Had my 70k service last thursday, three re-flashes later, fuel consumption up 15 % , and now it takes longer for the loose nuts and bolts in the cylinders to dissipate. Thursday afternoon got the phone call you car is ready to be picked up. The tech said " a little noisy under the bonnet, but it is a diesel !". Well naturally I wasn't accepting this, so i left it overnight and told them I'll be in at 8am to take one of them for a drive. The good old girl put on a great show, she rattled to her hearts content. But the poker face tech said I'll have to discuss my vehicle to the guy that deals with these issues and will let me know monday. As threatening is not in my nature, ( but can get arked up under the right circumstances) what action has others done to get this sorted.?

[lippa]

they just put new engine mounts in mine, f@#k i hate toyotas service departments. c#$nts

[BlackDiesel]

Went Down to Toyota spare parts the other day to grab a cargo mat for the 120.
While i was there the manager recommended an injector and fuel system treatment thats recently been released by Toyota for the D4D without me even mentioning anything about my engine. Gets rid of all the residue that builds up cause the quality of deisel sold here he said. So i though why the hell not. Cost around $35 from memory.
A once a year treatment.
Only had the Prado for a few weeks now, and didnt think i had any issues regarding rattle or at least not excessive anyway.

Well i gotta say, i have used about 50litres of diesel so far (a bottle of treatment does around 70litres of Diesel) and initially it didnt sound or run any different, but now it runs so much quieter to the extent where even the wife commented and says it sound more like a petrol engine then an oiler. And its now so much smoother to drive with a lot more torque.

Like i said i didnt have any issues before hand, and was quiet happy with it and if i had not gone to Toyota spares i probably wouldnt have considered a treatment.

Just thought i would share my experience with you, and for what it costs i reckon its worth a try.
By the way what a hell of a car the Prado is!

cheers John

[sacred cow]

BD,

Can you please advise the stuff that your Toyota dealer recommended you add to the diesel?
Thanks
Glenn

[Bushbasher]

BD,

Can you please advise the stuff that your Toyota dealer recommended you add to the diesel?
Thanks
Glenn

Saw it at my dealer today "Injector Cleaner for D series petroleum engines" it says. Specially formulated for the D4D engines apparently. One bottle per 70 litre tank or max 2 bottles with a full refill.

I have to get them to check mine because it has become noticeably louder since the 30k service 3 weeks ago. And what about that shaking when idling?

[gxl_d4d]

The flyer for the Toyota injector cleaner suggested use every 40 000km. What does a bottle cost?

I've used Diesel Power in the past. The engine seems to vibrate less with this but the injectors make a lot more metallic rattling noise with it than without.

[pjorek]

i thought the general consensus was not to add anything to the common rail diesels as it might block the injectors?

[Walter]

I had my Oct 2007 D4D ECU reflashed just over 12 months ago. The rattle disappeared and has not returned. Have done around 25K km since the reflash.

So - so far so good.

Ron

[CJ]

Well finally they have come to the party. After the third time leaving it in overnight for them to do the cold start thing, the head mechanic took it for a drive. 20 meters down the road he said," definately a problem with your injectors. " So its now booked in to have all the injectors replaced at a cost to toyota $4000 ( parts only). No wonder they put up a fight. Up until now I have been dealing with the counter staff and over the year with this problem, they keep pushing me off. Well the look on there face when the head mechanic told them to book me in for a complete replacement of the injectors , was in some way worth the wait.

[Fungi2003]

Well here I am, it's over a month since the "D4D Death Shudder" occured and I'm still no closer to knowing the cause of the hole in the piston. All the injectors have now tested fine.

I was hoping they would find a problem somewhere. How can anything be fixed properly if they don't know the real cause. Will it happen again have they missed something

PeteS

Hi PeteS,

Have Toyota established root cause to your death shudder issue? I've been keeping a watch of this thread over time as I own one of the first 120 series D-4D Prado's imported into Australia.

Do you have any advice for preventative maintenance that should be performed to avoid this? I am tempted to go visit the local Denso dealer to check all fuel components (pump, filters, injectors, manifold and even a visual inspection of the cylinders).

[Hutch]

Is it just me, but trading in the V6 on another one seems like a better option until the D4D gets replaced!!!! reading some scary stories. I know it is a small minority of D4D's, but you don't hear of many issues with the V6.

[CJ]

Apparently it only affects D4D engines with the old spec injectors, however he did say not all old spec injectors play upl. The head mechanic informed me that Toyota started to install the new spec injectors from early 08 onwards. Another interesting note I found out, is that you can only do 1 ECU reflash. It seems that my services department ( maybe to keep me thinking they were doing something about it) told me on each service they do a reflash ,and then tell me to come back in 1000k.

[Fungi2003]

Apparently it only affects D4D engines with the old spec injectors, however he did say not all old spec injectors play upl. The head mechanic informed me that Toyota started to install the new spec injectors from early 08 onwards. Another interesting note I found out, is that you can only do 1 ECU reflash. It seems that my services department ( maybe to keep me thinking they were doing something about it) told me on each service they do a reflash ,and then tell me to come back in 1000k.

Interesting. I spoke to a reputable Denso/Bosch workshop earlier on today about getting my fuel/injector system inspected as I have just reached the 150,000km mark (I have a November 2006 build D-4D). After a fairly lengthy discussion the gentleman I was talking to never heard of the issue (deather shudder) discussed in this forum. I would have thought that these guys would have known about this?

Another thing he noted that was gunk in the manifold is apparently normal due to the re-circulation/re-burning process common in any CRD engines. He agreed that it was good preventative maintenance to take off the manifold and clean the gunk out.

[klokan747]

Been almost 4 weeks since Toyota agreed to replace the injectors - still waiting on parts apparently! Keep this in mind when going through this process. Apparently they also need to replace all fuel lines and seals and the fuel pump.

[Davros]

Is it just me, but trading in the V6 on another one seems like a better option until the D4D gets replaced!!!! reading some scary stories. I know it is a small minority of D4D's, but you don't hear of many issues with the V6.

One major issue is high fuel consumption.

Been almost 4 weeks since Toyota agreed to replace the injectors - still waiting on parts apparently! Keep this in mind when going through this process. Apparently they also need to replace all fuel lines and seals and the fuel pump.

I haven't heard of the pump requiring a change out before.

[blw]

I've had intermittent cold start shudders this winter in my D4D (Aug 2007) model. Its a very rough idle that comes when stopped at the lights, I have been able to constently reproduce the issue in reverse for some reason, but only in drive about 50% of the time. Knocking the shifter into neutral stops the shudder immediately.
Does this sound like the engine mount issue or the Injector issue?

I live in Sydney and are keen to visit a Toyota dealership that has experienced this issue before - can anyone recommend one?

[Fungi2003]

I've had intermittent cold start shudders this winter in my D4D (Aug 2007) model. Its a very rough idle that comes when stopped at the lights, I have been able to constently reproduce the issue in reverse for some reason, but only in drive about 50% of the time. Knocking the shifter into neutral stops the shudder immediately.
Does this sound like the engine mount issue or the Injector issue?

I live in Sydney and are keen to visit a Toyota dealership that has experienced this issue before - can anyone recommend one?

Sounds more like an engine mount issue more than anything else. Wouldn't hurt getting the injectors checked as well.

I just moved up to Sydney and can't recommend a dealer (yet). I still get my car serviced in Canberra.

[klokan747]

Well after a months wait for parts I finally got the injectors replaced today. Just picked up the car and will park it outside for the night to test it in the morning.

Should I expect it to be quieter instantly or have to put a few kms on the new injectors first?

Fingers crossed.

(Also - Fuel pump was NOT replaced, they got it wrong the other day when I was told otherwise).