Looking for some expert opinions on fuel system failure - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 20 (permalink) Old 06-27-2011, 04:48 PM Thread Starter
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Looking for some expert opinions on fuel system failure

I know this isn't a Ford but any help would be appreciated.
As the title says I'm looking for some opinions on my fuel system failure. I turned it into my insurance and they are saying it is normal wear and tear. If I could get some replies from some experts on what you think happened and why. Have you ever herd of a entire fuel system going bad all at once. Could this be wear and tear? I don't need names but if you could qualify yourself that would be great.
Here is the scenario

4/1/2011 I got fuel at the Delta Gas Station on Railroad Ave., Patterson around 7-7:30am. Exhibit 01 - Approximately 40-50 miles later, the truck started running poorly and finally got to the point that it needed to be towed.
Exhibit 02 - It was taken to Salerno GMC Dealership, Randolph, they diagnosed the problem, the #5 injector and the fuel pressure sensor were bad.
Exhibit 03 - The truck was then taken too J&J Diesel Repair for the work to be completed. Upon completion of that repair, the truck was still not running right and J&J did not have the computer program to continue working on the truck. Exhibit 04 & 05 -

So the truck was then sent to Gearhart Chevrolet where it was diagnosed as fuel contamination. The tank was dropped and cleaned, cleaned fuel lines, replace fuel filter, start vehicle; runs poorly. #5 and #6 injectors reading +12 out of range, replace #5 and #6 injectors. Start vehicle, still runs poorly, #3 and #7 injectors now reading +12, out of range, replace those. Vehicle ran better but has immediate miss fires, suggested to replace all other injectors. Injectors were programmed each time injectors were replaced. Exhibit 06

Truck still runs poorly, now loosing power going up hills. Replace fuel filter housing and sending unit. Exhibit 07

Truck still runs poorly so replaced and installed new pressure relief valve. Exhibit 08

Truck is still running poorly and loosing power, fuel system unable to reach correct operating pressure, engine fuel pump not putting enough P.S.I. probably related to prior water contaminated fuel, checked system injectors tested good, needs fuel injection pump. Exhibit 09

The Service Manager suggested that I turn this into my insurance due to water contaminated fuel caused all the damage to the system.

Please tell me what you think and why.
Thank you
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post #2 of 20 (permalink) Old 06-27-2011, 05:12 PM
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Originally Posted by f419sr1 View Post
Exhibit 02 - It was taken to Salerno GMC Dealership, Randolph, they diagnosed the problem, the #5 injector and the fuel pressure sensor were bad.
First off, there is no fuel pressure sensor on these trucks... Not sure where the GMC dealer came up with that.

Secondly, you don't give any information on your particular truck and did not say how many miles are on the truck but fuel pumps do go bad over time and the fuel pressure regulator spring does go weak over time. Both can be replaced.

Third (and I don't mean to sound condescending here) are you sure you didn't put gas in it instead of diesel? That is a more common thing that many would care to admit..

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post #3 of 20 (permalink) Old 06-27-2011, 06:02 PM Thread Starter
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Yes it was the regulator not a sensor poor choice of words on my part. The truck has 108,000. I have had diesels going back to 1988 and no I did not put gas in the truck. It also went through 9 injectors all at once. In the letter it shows that the # 5 was replaced and on just test time it wiped the new #5 out too. Yes parts go bad but why ot what caused the entire fuel systen to go all at once. Is it normal wear or cause and effect?
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post #4 of 20 (permalink) Old 06-27-2011, 07:53 PM
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so why have you not yet given any details as to what engine? ? ? assuming its a chevy do they not also have some sort of water in fuel indicator. did you get the "contaminated"fuel sampled. then you might have a claim against the fuel supplier. the onus on you would be to prove that your fuel system had been maintained to factory specs and that no part of the condition was preexisting to the fill up. i wish you well

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post #5 of 20 (permalink) Old 06-27-2011, 08:45 PM Thread Starter
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so why have you not yet given any details as to what engine? ? ? assuming its a chevy do they not also have some sort of water in fuel indicator. did you get the "contaminated"fuel sampled. then you might have a claim against the fuel supplier. the onus on you would be to prove that your fuel system had been maintained to factory specs and that no part of the condition was preexisting to the fill up. i wish you well
Its a 06 GMC lbz. The dealer pulled the tank and said it was loaded with water which I have on the repair order. The tank was cleaned as stated in the letter to them. The fuel was dumped into a dump tank at the dealer contaminating my fuel samples. The insurance co came out and I'm guessing 1week to 1 1/2 week later and took a sample off the top of the tank which we all know water doesn't float in fuel. They sent the sample out and it comes back clean. I'm trying to find out is it common for a entire fuel system 9 injectors fuel regulator and injection pump to go all at on time. Is this a common occurrence (wear and tear) like the insurance co. is saying or is this cause and effect? I maintain my truck and there were no pre existing problems before fueling that morning. I had a amsoil bypass for the extra filtration and an air dog on for the fuel filtration. Unfortunately for me I never kept records of the maintenance I did never thought I would need to prove I service my truck. Lesson learned I now have a file for every penny spent on it.
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post #6 of 20 (permalink) Old 06-27-2011, 09:14 PM
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I didn't even notice this was not about a Ford 6.0. This needs to be in the GM section, not this one.

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post #7 of 20 (permalink) Old 06-27-2011, 10:24 PM Thread Starter
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I didn't even notice this was not about a Ford 6.0. This needs to be in the GM section, not this one.
Why would it matter which section its in. The basic question is it common to lose an entire fuel system all at once under normal conditions. Has any one ever herd of this happening under normal conditions or to lose the entire system all at once does some thing have to happen to it? I'm looking to try and back up what I believe that its not common place for this kind of failure to happen with out a cause.
To clarify each exhibit is a dealer receipt
I was hoping that people would read the sequence of events and give an opinion on what they think happened.

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post #8 of 20 (permalink) Old 06-27-2011, 10:37 PM
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Originally Posted by f419sr1 View Post
Why would it matter which section its in. The basic question is it common to lose an entire fuel system all at once under normal conditions. Has any one ever herd of this happening under normal conditions or to lose the entire system all at once does some thing have to happen to it? I'm looking to try and back up what I believe that its not common place for this kind of failure to happen with out a cause.
To clarify each exhibit is a dealer receipt
I was hoping that people would read the sequence of events and give an opinion on what they think happened.
This ensures members to be able to give you the best answer. While most newer model diesel engines fuel systems are similar the 6.0L PSD is quite different than any of the GM Duramax fuel systems. It is possible for something such as water to damage an injection pump and injectors, the Dmax using the CP3 to pull fuel from the tank then send it to the fuel rails. While the 6.0L does not have an injection type pump and is a HEUI system that uses the HPOP to build pressure.

Thread also moved to LBZ DMax forum.

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post #9 of 20 (permalink) Old 06-27-2011, 11:03 PM
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The Air Dog should have taken the water out of the fuel, unless the Water separator was never changed, emptied or there was so much water in the fuel that it over whelmed the Air Dog. Did the WIF sensor on the stock filter detect water?

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post #10 of 20 (permalink) Old 06-27-2011, 11:52 PM Thread Starter
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The Air Dog should have taken the water out of the fuel, unless the Water separator was never changed, emptied or there was so much water in the fuel that it over whelmed the Air Dog. Did the WIF sensor on the stock filter detect water?
The filters on the air dog were only a couple of weeks old and if I remember right the stock had around 60% on the evic. I also ask the dealer why the light never came on and if the other truck in for the same if the light came on. He didn't know why and the same for the other truck. They showed my a container with the water in the fuel. I'm positive on what happened. I posted the scenario to find out what conclusions others would have by reading it. To find out if others have had complete system failures for no apparent reason meaning good fuel and maintained. Its my guess the answer is no
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