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I have a 2004 duramax that just died going down the road tried priming pump and seems to have pressure but still wont statr

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05 duramax injectors have gone bad I'm told because the ecm has gone bad. Is this the case or I'm I being told a crock? They say it needs 4 injectors. While I was driving down the road it started missing and then it would quit and start missing again. After about 6 miles it died. After changing the fuel filter and priming the system it would not start unless assisted with gas vapor. It will run for a few seconds (20 or so) very rough with no power at all and then would die. Does Chevrolet have any recomendations or will they give any assistence with this problem. I don't think I'm the first person that has had injector problems with the Duramax .

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It sounds like a fuel pump problem. When you first turn the key on you should hear the fuel pump run for about 5 seconds then shut off. There is a fitting on the fuel rail on the engine that looks like a tire valve, try pushing on that to see how much pressure there is after the pump runs. There should be a good amount of pressure on it. If fuel just dribbles out or there doesn't seem to be much pressure it is definaly a fuel pump. The best thing is to use a fuel pressure guage that will attach at that fitting. There should be between 45 - 60 PSI of fuel pressure when the pump is running. Good luck with your problem.

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try hooking up a fuel pressure test gauge to fuel rail pre filter and post filter and rev truck to 2500 rpm what is fuel pressure ?
next using a vacume pump attach to fuel pressure regulator pump up while engine is running only pump up to 8 psi to see if pressure changes if not replace pressure regulator .
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