Injector Swap

TonyP

Super Moderator
Supporter
Joined
Feb 25, 2010
Messages
3,275
Country Flag
uk
Made this a "Sticky" thread as I have just spent 30mins searching for it :laughing-rolling::laughing-rolling:
 

TonyP

Super Moderator
Supporter
Joined
Feb 25, 2010
Messages
3,275
Country Flag
uk
So just pulled the injector trim values and they are all within the +-3 threshold.... I still think they need doing though:
Injector Vals.JPG
 

flint

Well-Known Member
Supporter
Joined
Mar 11, 2014
Messages
1,313
Mine were a lot worse than that on the feedback values, one at 4 another at 5 when cold and still well out even with the temp up at 80. With the recon ones in, it's still not the quietest of diesels, but the knock has gone.
 
Don't like the adverts?  Click here to remove them

Rob Cowell

Well-Known Member
Joined
Nov 15, 2011
Messages
1,345
Country Flag
wales
So just pulled the injector trim values and they are all within the +-3 threshold.... I still think they need doing though:
View attachment 155218

Coolant only 20C, so that's a cold reading, I don't think that's too bad. Need to see numbers warm too. If number 1 is still -2.4 then it's not a catastrophe but might be worth starting to plan a change. Mine were +/- 4 to 5 by the time I did them, they were loads better after though!

Also look at the injection volume when warm, under 9 is great, under 12 is survivable but again, start planning.
 

TonyP

Super Moderator
Supporter
Joined
Feb 25, 2010
Messages
3,275
Country Flag
uk
Right, the warm values do not look too bad at all...

Injector Vals Warm.JPG


Also look at the injection volume when warm, under 9 is great, under 12 is survivable but again, start planning.

Again, once warm the injection volume values look ok. What would impact this number?
 

Rob Cowell

Well-Known Member
Joined
Nov 15, 2011
Messages
1,345
Country Flag
wales
Right, the warm values do not look too bad at all...

View attachment 155226



Again, once warm the injection volume values look ok. What would impact this number?

It's the warm numbers I'd be more concerned about. From what I've read from some knowledgeable folk on PradoPoint you want injectors within +/- 3 when warm. Yours are in spec when cold. Happy days.
 

TonyP

Super Moderator
Supporter
Joined
Feb 25, 2010
Messages
3,275
Country Flag
uk
@Rob Cowell as I am about to remove the injectors to check the seals, I am thinking about replacing them (even though they are within tolerances). You mention above that you got yours from Specialist Diesel Services, do you have a link to them, and which ones are the correct injectors as a casual search reveals there are a few different choices?
 

Rob Cowell

Well-Known Member
Joined
Nov 15, 2011
Messages
1,345
Country Flag
wales
Hi @TonyP. Mine were from here https://www.commonraildiesels.com/
I just bought the injectors within the age range shown, but I don't think the 2000-2009 range one existed when I got mine. I cross checked the part number on Toyodiy for my VIN and made sure it was listed as covered by the injectors I bought (click on the pics to see the details). Might be worth calling them to find out what those 2000-2009 ones are though, maybe something newer / better.

Note, mine came with copper washers, which of course you do not want!

Also make sure you have torque wrenches that cover the ranges you need for the socket sizes you need before you start. I can't remember which bolt it was now but I needed to get a 17mm on my 1/4" wrench to get low enough torque. No big deal but I didn't have a 1/4" - 3/8" adaptor to hand and had to nip out and get one.
 

TonyP

Super Moderator
Supporter
Joined
Feb 25, 2010
Messages
3,275
Country Flag
uk
Thanks Rob. I did find this site, but wanted to check with you. Firm believer on going on recommendations.

And I do have a couple of torque wrenches, so should be covered. Just ordered some crow feet spanners... any excuse for new tools :)
 

Iwan

Well-Known Member
Joined
Mar 28, 2011
Messages
1,602
Country Flag
wales
I've been following this guy from Australia for while.. he specialises in the 1kd ft and his channel is full of info and knowledge. His channel name is "fourby4diesel" and a sound guy.


An example of content..
 

Gasmanjc

Member
Joined
Oct 11, 2016
Messages
199
Country Flag
australia
I bought my injector kit from this guy. Also the big front end job kit.
 

TonyP

Super Moderator
Supporter
Joined
Feb 25, 2010
Messages
3,275
Country Flag
uk
Well tackled this job today, and was pretty straight forward. Followed the guide that Rob linked to.

Got caught out again by hydolocking cylinder 1. This happened last time I changed the injector seals. The area I work on had quite a incline, so when pulling injector 1, the cylinder fills up with oil.

After taking it all apart again, and lifting injector 1 slightly I turned the motor over which pushed the oil out.

Reassembled and codded in the new injectors and after about 30 seconds of cranking it started up.

Sounds and runs much quieter and smoother. Hopefully that will resolve it going into limp mode..... time will tell.

IMG_20210306_150953.jpg
 

MarkW

Well-Known Member
Joined
Aug 20, 2014
Messages
2,245
Country Flag
morocco
@Rob Cowell how have your injectors faired over the years? Looking at doing mine in the next couple of weeks and commonraildiesel seem to be quite a lot cheaper than other sources.

Also looking at the parts diagram on partsouq it refers to type A and type B injectors, anyone know what thats about? Mines a 2005 LC3, I know I could phone commonaildiesel but I thought I'd ask here first :D
 

TonyP

Super Moderator
Supporter
Joined
Feb 25, 2010
Messages
3,275
Country Flag
uk
I called them in the end to make sure I got the correct ones. It's a pain to take it all apart just to find out that they are incorrect...

As a side note, 2 months and about 500miles later (covid...) It's all good and it's not gone into limp mode since...
 

Rob Cowell

Well-Known Member
Joined
Nov 15, 2011
Messages
1,345
Country Flag
wales
@Rob Cowell how have your injectors faired over the years? Looking at doing mine in the next couple of weeks and commonraildiesel seem to be quite a lot cheaper than other sources.

Also looking at the parts diagram on partsouq it refers to type A and type B injectors, anyone know what thats about? Mines a 2005 LC3, I know I could phone commonaildiesel but I thought I'd ask here first :D

I'm now on 198000 miles. Think I changed at 120000. Haven't hooked up Techstream for a while. Had to give my old laptop back to a previous employer and haven't tried to reinstall. But engine is quiet from cold still, and my gear stick doesn't throb at idle; both things "fixed" after the swap. I have tried to use "posh" diesel since I did the swap, but certainly not religiously.

Type A / Type B, no idea sorry. I looked up my part number on toyodiy and cross referenced to the place I bought them. Just checked, and my chassis number shows with only Type A on Toyodiy.
 

MarkW

Well-Known Member
Joined
Aug 20, 2014
Messages
2,245
Country Flag
morocco
Thanks both, given the feedback from you both a call to commonraildiesel is in order.
 
Top