there is so much negative information reported about injectors that I think most of us are a bit paranoid it .... got a Predator for Christmas and have been monitoring the injectors in my truck as well as those of a couple of other friends ... to set the stage, our truck is an early '02 with '01 injectors ... it has 81,000+ miles, zero engine/transmission issues to date, has been on Juice since 15,330 miles, Kennedy Mega filter (post OEM) added at 41,536, Howe's fuel treatment every tank prior to 41,550 and Total Power added every tank since ... following reading taken at 81,050 miles:

in gear
1.04
-1.50
.60
- .66
-1.44
-1.79
-1.21
-1.96

in neutral
.07
-1.13
.15
-1.04
-1.15
- .93
- .96
-1.30

fully realizing she may not crank the next time I turn the key, I don't think all things considered those readings are too bad :ro)

Jim

you better take it in and have them look at it for low balance rates

Eric
having a good day?

you better take it in and have them look at it for low balance rates
Eric...

since I've already admitted to being paranoid :rolleyes: and not really having a clue about most of this stuff ... I sure hope that was a joke!!

Jim

Eric...

since I've already admitted to being paranoid :rolleyes: and not really having a clue about most of this stuff ... I sure hope that was a joke!!

Jim


Sure was and is


Those injector balances are looking real good Jim :)

):h

oh boy.... Jim. Just when all was going well, you had to say something. Don't you know as soon as you open your mouth about how good things are going the inevitable happens?

Seriously... I had post oem filtration and used Primrose 405. Never had any injector problems up until I traded at 72,000.

The bad part is it doesn't look all that promising after 100,000 miles but the good part is you get brand new ones if you run into trouble at no cost.

The injector survey going on here isn't all that promising.

oh boy.... Jim. Just when all was going well, you had to say something. Don't you know as soon as you open your mouth about how good things are going the inevitable happens?

Seriously... I had post oem filtration and used Primrose 405. Never had any injector problems up until I traded at 72,000.

The bad part is it doesn't look all that promising after 100,000 miles but the good part is you get brand new ones if you run into trouble at no cost.

The injector survey going on here isn't all that promising.
thanks Mac/Eric/Hoot

know what you mean hoot by "Just when all was going well, you had to say something. Don't you know as soon as you open your mouth about how good things are going the inevitable happens?" ... you can believe me I thought a while prior to posting the rates! :o .... I have no way of knowing if any of the things I've done have actually had a positive impact or not .... freely admit the letter in the glove box extending our truck's injector warranty has been most weclome ... it is my understanding that something in the '01 injectors is prone to crack and it would seem logical that under those circumstances everything could be going well one minute and need to be replaced the next

Jim

Enjoy your trucks!

Don't get caught up in the misery some people project.I talk to MANY people that own these trucks MANY NEVER have a INJECTOR problem.

Enjoy your trucks!

Don't get caught up in the misery some people project.I talk to MANY people that own these trucks MANY NEVER have a INJECTOR problem.

How many miles on yours now MAC?

Misery and facts. You don't see a lot of misery projection on this site but you do read a lot of facts.

How many miles on yours now MAC?

Misery and facts. You don't see a lot of misery projection on this site but you do read a lot of facts.


Why is MY truck the comparison? How many miles were on your truck when you pulled your skirt up?

Mine has 42k on it with brand new injectors.Like I said I spoke with a Auctioneer the other day when he pulled in with his Duramax.I find out he and his son both own them,both 02's.Neither run additional additives over pump fuel or additional fuel filtering.

He has 80,000 with out a hiccup his son not so fortunate,replaced two injectors prior to the new warranty release.So far so good. Said he will buy 2 more with out hesitation.
Are you saying blind faith Hoot? Go grease your ball joints,keep the faith you wont lose a wheel. ;)

After all your beefing the front end and running larger wheels,oh my rubberband is stretching! Will you bring it in for warranty,when it fails? :eek:

It's all great unless you have trouble getting a decent dealership to fix them right. Not always so easy with diesels. Get your head out of the sand Mac... you know I was the same way.

Hoot...

after reading and considering your comments I decided to call our local dealership (which is by no means a major player in the national diesel market) just to see ... since '01 they have sold 29 Duramax equipped vehicles, to date they have had to replace the injectors on 1 truck which happened to be an '01 model ... it is certainly possible that others could have had problems and taken their truck to some other dealership for repair, but if that is the case the service manager (who is a long time friend) hasn't heard of it ... in my circle of friends there are 7 Duramax owners, as best I can recall (including mine) there are 2 - "02's (1 early, 1 late), 3 - '03's, 2 - '04's ... none have had any injector (or any other major) engine issues ... have used my Predator on 4 of them and the highest number I have seen is a -4.21 while in gear, with the vast majority of the readings being =/- 2.50 or below .... here again, this is not to in an any way take away from the fact that there are way too many folks who have had injector problems, nor that mine or any other truck couldn't be next on the list .... I tend to agree with Mac that in the flow of information related to injector issues, we often fail to recoginze that there are many (probably a majority of the) folks out there who aren't having problem, or at the very least haven't had any problems yet ... in the injector failure thread Hoot mentioned I noticed a tally on 1/4/05 that places the failure rate of about 25% of those reporting

Jim

Just to throw a little fuel on the fire...my early '02 with 104k miles is still running on the factory injectors. No problem yet, but now that I let the cat out of the bag, I'll probably find a crankcase full of diesel this afternoon!!!!

MaxRock

Only GM knows for sure. The way GM and other car companies tend to hold back, the fact that they came out with the 200,000 mile warranty gives us a little inside flavor of what the real stats are.

I have to agree the survey here will most likely have a higher percentage than the mainstream. I know a bunch of people with Dmaxes too. 30% failure among them is probably pretty accurate.

I'm not on a tirade here on injector failure as MAC tends to believe. I just don't believe I would send GM a message that all is well...

Surveys lie, and that's a fact. Survey participation is always optional and who are the first to participate? exactly. The business of statistics is plauged with biases so be sure to take any survey result with a grain of salt.

That being said, I've been sitting at home for 4 hours trying to get my D-max running. Without plugging it in she wont start after sitting all night in the cold (and not that cold!) Back to the dealership she goes.

I have a 02 crewcab dually with 65,000 miles on it, most of it towing and its never been back to a dealer. Changed the fuel filter at 40,000 because it seemed like a good idea.

I have a 02 crewcab dually with 65,000 miles on it, most of it towing and its never been back to a dealer. Changed the fuel filter at 40,000 because it seemed like a good idea.

changed the fuel filter at 40,000 :eek: ... no problems to date :) ... interesting how some vehicles can be babied and have problems and others can be ignored (for lack of a better term) and run so well :confused:

Jim

changed the fuel filter at 40,000 :eek: ... no problems to date :) ... interesting how some vehicles can be babied and have problems and others can be ignored (for lack of a better term) and run so well :confused:

Jim
That is really true... I know several guys that never changed fuel filters until they clogged and the truck wouldn't run. They still run great. Yet we know of guys on here running secondary filtration since new and still needed injectors. Basically there is no answer as to what will help.

Well I'll just throw in my two cents. In my circle of friends and fellow employees I can honestly say that none have had any issues (Injectors or other) One that really stands out a 2002 CC with over 180K miles.(Completely Stock truck with OEM filtration)

It's now also a fact that as the Cummins after their 2 year debut of the HPCR system and meaningfull miles are also beginning to see injector failures per the Dodge forums/dealerships. I actually believe Diesel fuel quality is the largest culprit. Our national fuel standards in regards to todays technology is lacking. IMHO if I get 100K per set I'm thrilled.

Where's the good stuff of owning a gm truck? all i read is bad...come on!!!!someone got to have something good!!! I'm having problems with mine but i STILL LOVE HER!!!!

I actually believe Diesel fuel quality is the largest culprit. Our national fuel standards in regards to todays technology is lacking. IMHO if I get 100K per set I'm thrilled.


a bear...

I used to believe this, as I'm sure many others do/did ... if fuel quality was causing the problem wouldn't a combination of very good aftermarket fuel filtration and high tech additives have gone a long way towards resolving it :confused: ... I could easily find myself evolving towards one of hoots theories, that being the design and materials used to make injectors isn't up to the job ... my hangup with going all the way with that theory is it appears the majority of our rigs don't have a problem .... thusly, I'm currently inclined to question the quality control in the production of our injectors

Jim

a bear...

I used to believe this, as I'm sure many others do/did ... if fuel quality was causing the problem wouldn't a combination of very good aftermarket fuel filtration and high tech additives have gone a long way towards resolving it :confused: ... I could easily find myself evolving towards one of hoots theories, that being the design and materials used to make injectors isn't up to the job ... my hangup with going all the way with that theory is it appears the majority of our rigs don't have a problem .... thusly, I'm currently inclined to question the quality control in the production of our injectors

Jim
With the big three all seeing failures that have gone unanswered I would say no one knows for sure. Maybe it's design. Maybe not. Maybe theres no stand alone reason. Could be a combination between design, fuel lubricity, fuel cleanliness etc. all contributing their share to the wear. I would say that the cracked injector bodies are design but asking a piece of metal to withstand fluid pressurized to +20K psi for over 100K miles without wearing a ball and seat is simply amazing in itself to me. I would think all the variables would have to be just right and then we would still be asking a lot. :confused: With the HPCR systems being new to the industry no one knows for sure if a lengthy lifespan in regards to wear is realistic.