Well I took my truck in for some recall work and to have the reflash done. They said that after hooking it up to the computer, my #2 injector was weak. That was yesterday. They called me back today and said that it was not weak enough for GM to cover it under warranty, so they could not change it. Is there anything that I can do, or do I just have to wait for it to go completely bad and then they will fix it.:(

I would run a tankful of fuel through it with a good additive and have it checked again; And then continue to use the additive on every fill-up. Given that you are in texas - you probably don't need cold weather protection (lowered gel point) - I would use stanadyne lubricity formula and use it religiously every tank. The oil pipelines recently banned all lubricity additives - so nearly all fuel in u.s. does not have enough lubricity for our trucks.

Diesel Injection Service stocks stanadyne stuff in lubbock and their on-line prices are very competitive. Their website is at www.dieselpage.com (http://www.dieselpage.com).

- jeff

Thanks, I'll have to check them out and see if it helps.

Codythom-

I totally agree with dmaxlover. Had the same exact problem on my number 1 & number 2 injectors with the same exact response from GM. Something will probably be done in the long run to address this problem (at least they did something on the LB7), but in the meantime Stanadyne has done the trick for me and has been worth every penny. Besides, it's the only additive approved by GM (maybe even required, but they're not paying for it:mad: ). After living a year living in Big Spring, I'd guess you are probably on the border between needing Diesel #1 or Diesel #2 in Lubbock. If you're getting #2, Stanadyne Performance Formula will reduce its pour point up to 40 degree F and gives up to a 5 point cetane rating gain. My fuel economy, which I am tracking as scientifically as possible, has gone up about 3 mpg in all driving conditions which pays for the Stanadyne:D . The good part is you can drive across town to buy the stuff and visit with these guys (I have to have it shipped from Lubbock). Hope this works for you. By the way, they may recommend some of the other products like the One Shot or the Lubricity Formula for a starting point since you're already having injector problems.
Adios-
Rowdy


DIS
3212 Slaton Rd
Lubbock, Tx. 79404

806-745-4122
806-745-5445 fax

Parts Mgr: Bryan Rayburn
Service Mgr: Randy Norton

Great information guys

I too am having an injecter sticking issue on my 05LLY
Mine is just smoking real bad from time to time. Most think the injecter is staying open adding too much fuel to the engine. I shut the engine down, wait a few, then fire up and the smoke is gone(for a while then it comes back).
Tonight I'm buying Stanadyne.
SHould I get the Lubricity flavor?
I live in California and use Diesel #2 from a truckstop.
Thanks
Burt

In california, you have lower sulfer diesel than "the rest of us". I would choose lubricity formula first - it actually is an industrial strength cleaner and lubricator. I go 1.5 X to double dose in the summertime. In the wintertime here, because morning temps can be in the 20s and I travel to the mountains where it can be lower -> I use 1 dose of lubricity formula and 1 dose performance formula. The performance formula protects from the fuel gelling and also adds cetane for easier starts on cold mornings (this isn't something that I would imagine you need in modesto, california).

I want to give myself enough additive that I have around 300 micron wsd on HFRR lubricity test. I overdose with lubricity formula to ensure this (or go one dose lubricity and one dose performance in wintertime)

- jeff

In california, you have lower sulfer diesel than "the rest of us". I would choose lubricity formula first - it actually is an industrial strength cleaner and lubricator. I go 1.5 X to double dose in the summertime. In the wintertime here, because morning temps can be in the 20s and I travel to the mountains where it can be lower -> I use 1 dose of lubricity formula and 1 dose performance formula. The performance formula protects from the fuel gelling and also adds cetane for easier starts on cold mornings (this isn't something that I would imagine you need in modesto, california).

I want to give myself enough additive that I have around 300 micron wsd on HFRR lubricity test. I overdose with lubricity formula to ensure this (or go one dose lubricity and one dose performance in wintertime)

- jeffThankyou! THankyou!
I will get the lubricity flavor, I realy hope this clears up my injecter issue/smoking issue. I hate to have to take my rig back to the dealer to have them look again then tell me that the problem is not found...
Thanks a ton!
Burt

Thanks, for informing me on where to get it, and all of the other information ya'll have provided. They called me this moring and said they would have to keep it another day. Since it was cold here this morning, the high idle kicked in and they said white smoke was pouring out of the exhaust. They ran to get there scanner, and by the time they got back over there they said the high idle kicked off, and it quit. They probably just tapped the brake and made it turn off. So I guess I'll see what happens. Thanks again.

In california, you have lower sulfer diesel than "the rest of us". I would choose lubricity formula first - it actually is an industrial strength cleaner and lubricator. I go 1.5 X to double dose in the summertime. In the wintertime here, because morning temps can be in the 20s and I travel to the mountains where it can be lower -> I use 1 dose of lubricity formula and 1 dose performance formula. The performance formula protects from the fuel gelling and also adds cetane for easier starts on cold mornings (this isn't something that I would imagine you need in modesto, california).

I want to give myself enough additive that I have around 300 micron wsd on HFRR lubricity test. I overdose with lubricity formula to ensure this (or go one dose lubricity and one dose performance in wintertime)

- jeffI have a question for you, and maybe this deserves it’s own thread but here goes. According to the Standyne web site both the performance formula and the lubricity formula improve the lubricity of fuel. The performance formula has additional benefits one of the most important I think is the improvement of the cetane number. Do you (or anyone for that matter) know if the lubricity formula improves lubricity more the performance formula? I know the same amount of lubricity formula will treat more diesel fuel than the performance formula will, would that be a reason to change to lubricity formula during the summer months and use the performance formula during the winter? Seems logical to me, but logic and the real world don’t always jive

The guy I bought my Stanadyne from said the Lubricity marked bottle is the Heavy Duty formula and treats 120 gal per bottle, heavier concentrate. The "all weather" bottle still has lubricity just a lower percentage of it. That one I belive was 80gal per bottle.

I am using the HD bottle first (first dosage I doubled it, pored in enough to treat 60gal w/30+- gal of diesel) after the Hd bottle is gone I will use the all weather additive, about 2oz per tank full, every tank full from now on:ro)

My sticking injecter issue is gone and I have only burned about 4 gallons sence I added this majic stuff.
Good Luck

The guy I bought my Stanadyne from said the Lubricity marked bottle is the Heavy Duty formula and treats 120 gal per bottle, heavier concentrate. The "all weather" bottle still has lubricity just a lower percentage of it. That one I belive was 80gal per bottle.

I am using the HD bottle first (first dosage I doubled it, pored in enough to treat 60gal w/30+- gal of diesel) after the Hd bottle is gone I will use the all weather additive, about 2oz per tank full, every tank full from now on:ro)

My sticking injecter issue is gone and I have only burned about 4 gallons sence I added this majic stuff.
Good Luck
So does that mean that the effective lubricity per dose is the same, there's just more doseages per bottle with the lubricity formula vs. the performance formula?

Thanks for humoring me,

Both lubricity formula and performance formula come in 1 pint (16 oz) bottles. For lubricity formula a pint bottle will treat 120 gallons. For the performance formula, a pint bottle treats 60 gallons. Stanadyne states in their literature that the lubricity formula contains 5 times as much "lubrication content". Given that it treats twice as much fuel - I would deduce that it has 2.5X the lubricity additive that performance formula does. Also, they state that adding lubricity formula to performance formula will increase overall lubricity and that the two can be blended.

Also, a standard dose with lubricity formula will treat kerosene or jet-a fuel; The only case they say you would need to overdose with performance formula is for jet-a or kerosene (or if the temp is below -20 degrees f) This is from their Q & A found on the stanadyne website.

The performance formula also contains a cetane improver and a wax dispersant. This reduces the pour point by 40 degrees f.

- jeff

...

I am using the HD bottle first (first dosage I doubled it, pored in enough to treat 60gal w/30+- gal of diesel) after the Hd bottle is gone I will use the all weather additive, about 2oz per tank full, every tank full from now on:ro)

My sticking injecter issue is gone and I have only burned about 4 gallons since I added this magic stuff.
Good LuckGiven that a half a bottle of performance formula (8 ounces) treats 30 gallons of fuel, you would wouldn't be adding enough if you only added 2 ounces per tankful.

Also, it's a good idea to fill up more often and not go below a 1/4 or 1/2 tank the majority of the time. On my shortbed, with the fuel guage reading just below a half, I have 10 gallons of fuel left in the tank. I do this for three reasons.

1. To keep the fuel cool. The fuel lubricates and cools the fuel system components - the majority of it is returned to the tank. There is a "fuel cooler" that it passes through prior to returning to the tank (be sure to check this occasionally and clean off the fins on it - it is in front of the fuel tank). By having a good amount of fuel in the tank at all times, I have plenty of "coolant". This reduces the possibility of the formation of asphaltines (miniscule tar balls that reduce fuel filter life and reduce effectiveness of fuel filter to seperate water from fuel). It also increases the effectiveness of cooling the fuel system components.

2. To have fuel that is twice as clean. The fuel left in the tank has passed through the fuel filter multiple times. Another way of saying this is that the fuel that is left in the 1/2 tank is "polished". Given that some of the wear that is experienced is dependent on the "hard particles" in the fuel - the majority will be removed bythe time I hit 1/2 tank (fyi - any fuel tests on this fuel will also show soft particles - miniscule particles of tar that are formed as a result of fuel being heated by injectors - these "soft particles" do not wear injectors). The net of this is that if I top off after running a half tank - I can cut my hard particle count essentially in half (e.g. when I fillup I add a half a tank of "dirty fuel" on top of very clean fuel that has been polished in the tank).

3. To reduce moisture. By trying to keep the tank "more full" at all times - you reduce the chance of moisture condensing in the tank and reduce the chance of water in the system. If water gets past the water trap in sufficient quantity to turn to steam - it does so explosively and can damage the injector (either crack the body or blow off the injector tip). Either free water or emulsified water will turn to steam if the concentration is high enough.

- jeff

Thanks Jeff, I have a 34gallon tank and I useually fill up around 1/4 tank. When I said 2oz I was guessing how much a normal dose would be:o hehhee Damn rookiees hehehee

I never thought of the 'polished' fuel scenario:ro)
Thanks again for the info.
Burt