2001 GMC Sierra 2500HD 6.6L Duramax Diesel / Allison transmissionsion
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5 Posts
Hello. New to this forum. I have done a lot of research so I am aware there are many forum postings about black smoke but none of them seemed to match my circumstances. My truck started bellowing out black smoke and at the same time act like it is starving for fuel when I hit the pedal. Then finally a couple of days ago it stalled and wouldn't start. I had to have it towed back to my place.
Since then I have tried priming the fuel and got it to start again, but usually it just dies again. But I have done that more than once where I prime it and it starts. Then eventually quits.
So I have read a lot of posts online. Most of them indicate the wastegate as the issue But I have read that most of the causes are either fuel injectors, fuel injector pump, EGR, filters or the Turbo. The last three I could see causing the smoke but not my stalling issues. So I am leaning towards fuel pump, fuel injection pump or fuel injectors.
Any thoughts? Also, how do test these components? I dont want to order all of the parts and I don't want to order one to find out it isn't the issue. These parts aren't cheap. Can I test most of these components out using a multimeter? Like I have no idea how to test injectors. There is a check engine light on and I my code reader didn't work so I need to go by a new one and I can't provide the codes in this post. I was thinking about picking up a Fuel Pressure Tester too.
Thank you very much for your time.
Since then I have tried priming the fuel and got it to start again, but usually it just dies again. But I have done that more than once where I prime it and it starts. Then eventually quits.
So I have read a lot of posts online. Most of them indicate the wastegate as the issue But I have read that most of the causes are either fuel injectors, fuel injector pump, EGR, filters or the Turbo. The last three I could see causing the smoke but not my stalling issues. So I am leaning towards fuel pump, fuel injection pump or fuel injectors.
Any thoughts? Also, how do test these components? I dont want to order all of the parts and I don't want to order one to find out it isn't the issue. These parts aren't cheap. Can I test most of these components out using a multimeter? Like I have no idea how to test injectors. There is a check engine light on and I my code reader didn't work so I need to go by a new one and I can't provide the codes in this post. I was thinking about picking up a Fuel Pressure Tester too.
Thank you very much for your time.