diesel rattle in D4D Prado

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

Prices of injectors have come down significantly over the last couple of years. And it's been commented many times, that this job just needs to be seen as part of the maintenance schedule, it's got me buggered that Toyo don't just add it to the logbook.
FWIW I just had mine done, 165k full Toyo history, 5k oil change, catch an installed at 100k , 3" exhaust, use BP fuel 90% of the time. My values were just sneaking to 2.9, I had noticed poor fuel economy, but no smoke or significant rattle, regular use of injector cleaners- flash lube or moreys
The mechanic found the EGR build up to be dry and crumbly, an indication that the catch can was working, most of this build up was probably in place prior to fitting. He found the Pistons to be in immaculate condition, ( some very minor pitting is normal for a car of this km.)
Since the new injectors are in it is smoother than ever, and fuel use is down noticeably. So IMO it's just one of the service items, I was probably pretty lucky to get that sort of kms out of mine. You can never say, but I followed all of the advice on here, and I think it must have helped a bit.
They really are a great car, comfortable to drive around town, great for the long drives, and also capable in the bush. Apart from this one flaw they really hit the mark. It also seems that this issue with injectors is not just a Toyo issue, it's with most CRDs

[Anth120playdo Banned Find all posts View Profile Close Anth120playdo]

Prices of injectors have come down significantly over the last couple of years. And it's been commented many times, that this job just needs to be seen as part of the maintenance schedule, it's got me buggered that Toyo don't just add it to the logbook.
FWIW I just had mine done, 165k full Toyo history, 5k oil change, catch an installed at 100k , 3" exhaust, use BP fuel 90% of the time. My values were just sneaking to 2.9, I had noticed poor fuel economy, but no smoke or significant rattle, regular use of injector cleaners- flash lube or moreys
The mechanic found the EGR build up to be dry and crumbly, an indication that the catch can was working, most of this build up was probably in place prior to fitting. He found the Pistons to be in immaculate condition, ( some very minor pitting is normal for a car of this km.)
Since the new injectors are in it is smoother than ever, and fuel use is down noticeably. So IMO it's just one of the service items, I was probably pretty lucky to get that sort of kms out of mine. You can never say, but I followed all of the advice on here, and I think it must have helped a bit.
They really are a great car, comfortable to drive around town, great for the long drives, and also capable in the bush. Apart from this one flaw they really hit the mark. It also seems that this issue with injectors is not just a Toyo issue, it's with most CRDs

Absolutely!!!

[ivansky Lurker Find all posts View Profile Close ivansky]

That does all seem to make sense, but the impression I'm getting from this thread is that Toyota is unlikely to suggest it to me - even though they tested my injectors because of the smoke problem I reported, at no stage was there any discussion about how the injectors might need to be replaced in the near future - they want to check the tappets next. Good thing I have Pradopointers to help me out! I haven't had a chance to have a more detailed discussion with the service dept at Toyota but I will in the new year.
P.S. Does the Scangauge monitor oil pressure? Is it possible to check my sump isn't blocked by keeping an eye on the gauge? There's some interesting stuff at scangauge.com.au but it looks like maybe the D4D doesn't send this reading to the diagnostics? Anyone researched this a bit more?

[cfryback Find all posts View Profile Close cfryback]

No scanguage can't monitor that.

From the voice of experience, if you get an oil light on the dash, it is too late....


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[Anth120playdo Banned Find all posts View Profile Close Anth120playdo]

No scanguage can't monitor that.

From the voice of experience, if you get an oil light on the dash, it is too late....


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^^ correct.

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

Xgauge can monitor anything that is sent to the ECU so Xgauge could monitor it, it's just a matter of finding the codes. However this is not easy, for example no body has worked out the code for Xgauge to monitor transmission temps on the 3 l patrol, and there is a huge amount of info on those things, and their forum is huge.
What we need is one of the IT gurus to get on the case, because that would be a great thing to monitor.

[cfryback Find all posts View Profile Close cfryback]

The problem is, it can only pass on information sent. Sadly oil pressure pickup isn't near the screen. SCV or rail pressure isn't sent as a code.


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[Anth120playdo Banned Find all posts View Profile Close Anth120playdo]

The problem is, it can only pass on information sent. Sadly oil pressure pickup isn't near the screen. SCV or rail pressure isn't sent as a code.


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Oil pressure is not available.

Fuel pressure should be, if one to was to sort out the code to input.

[ivansky Lurker Find all posts View Profile Close ivansky]

Well I'm pleased to report that my sump screen looks almost entirely clear. The inspection camera on special at Supercheap this week didn't fit through the hole but when held up to it shows a clear picture, with only one very small blob of something that mechanically minded brother-in-law thought looked like sealant. So that is a big relief. I think in the new year I will still get it into a good diesel place in Canberra (happy to accept more recommendations) and get some advice about the injectors. I spoke to Toyota who serviced it a month ago and they confirmed they don't check the sump screen because "you have to take the sump off for that". I should say though that was a different workshop (same company) as the other workshop is closed for the holidays. So maybe my service did include the sump screen, but I couldn't verify it unfortunately so thought I had better go ahead and check the screen.

Thanks for all the advice and assistance.

[Anth120playdo Banned Find all posts View Profile Close Anth120playdo]

Well I'm pleased to report that my sump screen looks almost entirely clear. The inspection camera on special at Supercheap this week didn't fit through the hole but when held up to it shows a clear picture, with only one very small blob of something that mechanically minded brother-in-law thought looked like sealant. So that is a big relief. I think in the new year I will still get it into a good diesel place in Canberra (happy to accept more recommendations) and get some advice about the injectors. I spoke to Toyota who serviced it a month ago and they confirmed they don't check the sump screen because "you have to take the sump off for that". I should say though that was a different workshop (same company) as the other workshop is closed for the holidays. So maybe my service did include the sump screen, but I couldn't verify it unfortunately so thought I had better go ahead and check the screen.

Thanks for all the advice and assistance.

Yes your sump screen should be clear, you said it's an 08 & generally they have the revised coated seats & generally don't leak.

Not many places look at sump screens including any Toyo dealers I have asked.
But they don't check your injectors either, well maybe they try to if you ask them.

124k & 7 years old, I suggest you throw a new or even better, baileys injectors in.

[Rick NZ Member Find all posts View Profile Close Rick NZ]

Seats are a servicable item here in NZ
45,000km on H/Duty use
90.000km on L/Duty use

Regardless of build date

[Anth120playdo Banned Find all posts View Profile Close Anth120playdo]

Seats are a servicable item here in NZ
45,000km on H/Duty use
90.000km on L/Duty use

Regardless of build date

Hey Rick some interesting info there.

Do you know what they consider light or heavy use on an injector seat? Lol......

Also have you seen the coated seats leaking? If so was it after a refit or factory? If so how many Klm's please.
I'm flat out trying to help the Aussies who are currently getting a raw deal.

[Rick NZ Member Find all posts View Profile Close Rick NZ]

Hi #### - sorry no lol for the D4-d
The fitment of a towbar = heavy duty use
( also we use our head and look further at the state of tyres etc to determine useage) as there is no clear cut line

I have replaced many sets of seat washers at 45,000 with no leakage noted - ( OEM coated or retro )
But have found seats washers to leak before 90,000km ( carbon starting to accumulate on oil pick up )
These are the coated OEM washer and retro leaking

I believe that the issue is related to the steel body injector fitted inside an alloy head
The alloy head grows faster and more than the steel injector - hence each heat cycle the engine does the injector seat pressure during the warm up must reduce, and then increase as the engine cools. This "working" of the seat cant help the known issue

Interestingly the Hi-Ace van with the same engine is only spec'd at 90,000km intervals
Im yet to change seats out on a van, as my service workshop doesnt see many of them at all

Even more intersting is that not one single PP member has taken up the offer for injetcor seat service kit I offered months ago.... seats , o'rings , seals, pipes etc ... Reason - money ???

Your on the ball #### ! - These are a servicable item - just like the injectors.
Yes it costs $$ - but lots lots less than an engine "Chernobyl"
Lack of attention to the detail the servicing a 1KD-FTV engine needs, results in unhappy customers.
Lack of action by owners to be proactive getting these items checked is just burrying your head in the sand

[Anth120playdo Banned Find all posts View Profile Close Anth120playdo]

Hi #### - sorry no lol for the D4-d
The fitment of a towbar = heavy duty use
( also we use our head and look further at the state of tyres etc to determine useage) as there is no clear cut line

I have replaced many sets of seat washers at 45,000 with no leakage noted - ( OEM coated or retro )
But have found seats washers to leak before 90,000km ( carbon starting to accumulate on oil pick up )
These are the coated OEM washer and retro leaking

I believe that the issue is related to the steel body injector fitted inside an alloy head
The alloy head grows faster and more than the steel injector - hence each heat cycle the engine does the injector seat pressure during the warm up must reduce, and then increase as the engine cools. This "working" of the seat cant help the known issue

Interestingly the Hi-Ace van with the same engine is only spec'd at 90,000km intervals
Im yet to change seats out on a van, as my service workshop doesnt see many of them at all

Even more intersting is that not one single PP member has taken up the offer for injetcor seat service kit I offered months ago.... seats , o'rings , seals, pipes etc ... Reason - money ???

Your on the ball #### ! - These are a servicable item - just like the injectors.
Yes it costs $$ - but lots lots less than an engine "Chernobyl"
Lack of attention to the detail the servicing a 1KD-FTV engine needs, results in unhappy customers.
Lack of action by owners to be proactive getting these items checked is just burrying your head in the sand

Thankx.

For the record, I think the 4 cylinder hates towing more than 1tonne.
Load the vehicle & a base camper, your are over 4tonne, that's enough for this poor little sucker.
Imo Anyone towing weight needs to get a 200.

Nice theory with seats, bit like falcons & crummydores here with the old cast blocks & alloy heads.
Same as the old Mazda rotary, alloy/ cast/ally/ cast / ally etc.
They are definitely a tiny seat under a lot of pressure from the heat & cool.

I'm yet to find a coated seat leaking.
I think checking the oil pickup every 5000 is the only insurance against it.

[MRW82 Member Find all posts View Profile Close MRW82]

My coated seats have leaked. baileys injectors/seats installed.

Doing an oil change at 15,000km after engine rebuild/injector replacement I found carbon on the sump screen and in the drained oil (oil changes at 5000 km intervals and previous 2 were all ok).
Took back to engine rebuilder for warranty, injectors removed, cleaned, seats/seals replaced and sump removed to clean pick up screen. He was a bit vague on cause of failure but did say it looked like one 'possibly' had a slight leak. He covered it under warranty with no questions asked so he must have found something wrong.


Interestingly, he claims to be rebuilding the 1kd engines and shipping them Australia wide at a rate of between 3 and 5 a week!!!!!