Fuel Injector Pipes HDJ100

[Bohus]

I'm the happy owner of a HDJ100 -00. When I bought it the odometer showed 140.000km.
I changed timing belt at 150.000km I did not replace the fuel injector pipes as recomended though. Today the vehicle has covered some 255.000 km and I have still not replaced them. The car is still running smoothly. Can anyone enlighten me why Toyota recomends this replacement of the fuel injector pipes at 150.000km?

Brgds
Mats in Gothenburg

 

[-uhuru-]

Can anyone enlighten me why Toyota recomends this replacement of the fuel injector pipes at 150.000km?

Brgds
Mats in Gothenburg

You should change injector tips @ 150,000 kms. I have never heard of changing the lines and cannot think of a logical reason. Maybe cleaning them every 150k, but replacing them??? wierd

 

[100 TD]

I expect there would be a discussion on this on the international/diesel forum, personally no need as far as I'm concerned, but maybe over the years, toyotas experience has showed some failures at say 200 to 250000 km, so they may have made it a PM issue well before any failures should occur. Corrosion of the pipes (and very high pressures) with poor fuel quality/contaminated fuel in different areas of the world may have lead them to this figure.
I wouldn't expect the injectors need doing at 150,000 km either, however they may, once again depending on fuel quality, and if your vehicle has obtained 150,000 crawling around the bush (equals lots of engine hours) or obtained 150,000 on the highway (equals low engine hours) in comparison.

 

[OursSauvage]

What I can say is french HDJ100 owners (most of them drive accross Africa at least 3 or 4 weeks/year) discuss about that time to time, many remplace the lines, but I never read from them a technical reason...except theory on vibrations or internal abrasions.
They are better desert cruisers than mechanics (and that's what they claim)

 

[OursSauvage]

Well... I asked some questions.
Euro HDJ100(at least those for french market) had a sticker under the hood saying you have to remplace the line.
Noboby I know did it, without any trouble.
The sticker wouldn't exist anymore since 2002

 

[Bohus]

Thank you everybody for your comments. I think the clue is the comments that this sticker which is found under the hood in my car (2000 blt) is not to be found from year 2003. Since I'm a fairly modest off-roader (no desert driving or heavy duty work loads) I will not disassemble something that works fine.

All the best.
Mats in Gothenburg

 

[100 TD]

My 2003 has it in the service manual at 150000 to replace the pipes, can't remember if there is a sticker in the engine bay or not.

 

[Wombat Oz]

I hope it's okay I resurrect this thread!?

Having just taken delivery of a 2004 HDJ100 (Australia) with 151'000kms on the clock I dug into the service requirements. My 80 is a 100'000km service, the 100 as you know is a 150'000km. The mechanic did not change the fuel pipes, nor did he check the valve clearances. Hence my looking here for thoughts. I think that since this thread is so old, it's still considered unnecessary?

As for my 80. I entirely relied on my mechanic. In this case, he only changed the injector pipes along with the timing belt, injectors and pump at 300'000km. This I guess is the answer to my question since it is the same engine (only the 100 has a computer controlled pump).

 

[beatle_bayly]

Your mech should have changed the T-belt at the 150,000km service? I would also expect he'd check the valve clearances.

Injector lines? Mine is a 2003 with almost 450,000kms and has the sticker (I've had the vehicle a couple of months). I can't see any evidence the lines were replaced after the first 150,000km service so they have at least 300,000km on them. I will be changing them at the 450,000km mark just as insurance (and to carry a spare set as I go grey-nomadding).

 

[Moridinbg]

The lines are 100% mentioned as something to change somewhere in the service or owners manual, can't remember where exactly. Reasoning is they might crack due to vibration fatigue. I have never heard of them cracking or being an issue. I changed them at 450k for peace of mind during an engine overhaul.

 

[Wombat Oz]

Your mech should have changed the T-belt at the 150,000km service? I would also expect he'd check the valve clearances.

Injector lines? Mine is a 2003 with almost 450,000kms and has the sticker (I've had the vehicle a couple of months). I can't see any evidence the lines were replaced after the first 150,000km service so they have at least 300,000km on them. I will be changing them at the 450,000km mark just as insurance (and to carry a spare set as I go grey-nomadding).

Def changed the belt. Didn’t do the valve clearances or fuel lines though.

The lines are 100% mentioned as something to change somewhere in the service or owners manual, can't remember where exactly. Reasoning is they might crack due to vibration fatigue. I have never heard of them cracking or being an issue. I changed them at 450k for peace of mind during an engine overhaul.

They are listed in the service manual as replace every 150’000km. Just why sure why it wasn’t done and thought maybe no ones does it. The parts are $600 odd for the fuel lines so not really keen to do it if I don't have to.

 

[Moridinbg]

The pipes were $203 a few months ago via Amayama. On my LHD 2005 the part numbers were 23701-17080, 23702-17080, 23703-17080, 23704-17080, 23705-17080, 23706-17080

 

[Moridinbg]

The pipes were $203 a few months ago via Amayama. On my LHD 2005 the part numbers were 23701-17080, 23702-17080, 23703-17080, 23704-17080, 23705-17080, 23706-17080

 

[Wombat Oz]

Yeah thanks. I got a price from the local dealer today and they wanted $125 per unit (your part numbers are correct @Moridinbg) but one was ex Japan so I went with Amayama since the postage delay is now the same. Never had any issues with them. $54 a piece from there. With the three parts to add a cabin filter total cost went from $1016 down to $446.