Black Smoke, No Power
 

04 duramax: Took it to the dealership, with what I beleived to be injector problems, did a diagnostic ($100.00) replaced the fuel filter and water seperater. Total bill $260.00. 2 weeks later had the same problem, took it back to dealer. Another diagnostic confirmed bad injectors. :humm: They replaced the injectors and now I have no power and black smoke looks like Mt. Saint Helens. Fuel mileage is lacking a little.
Need some info before I go back to the dealer:bat:

sounds to me like the turbo is shot or not properly working

does the engine have a miss to it?? possibly another bad inj.

I suppose that is possible. Not what I wanted to hear. But I the more I know now the better.
Is it possible that the injectors aren't set right? This trouble began the day they were replaced.

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The engine lopes a bit at idle.

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I was going south over the mountains into Grants Pass Or. I could just get about 50 MPH without causing a wreck behind me.

well its hard to say without seeing or hearing the truck.

I am takin it to another doctor tuesday for a second opinion. Every time I go to the dealership I feel like I need a hug afterwards, and I'm a little sore in the loins.

lol i know the feeling

Thanks for the input everyone


D-MAXIMOUS

Can you tell how much boost you are making? I would check IC, IC lines, and Turbo for sure. If its all black smoke, its just more fuel than air..

Well.... nobody suggested a plugged up air filter sooo... I throw:w2: that idea out there too.

I pulled the air filter and cleaned it already, because I was thinking the same thing and that was an easy check but it wasn't too bad.

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I've been talking to some other people, and everyone seems to think turbo problems.

i know this is about a duramax, but a friend of mine has a 00 or 01 cummins. his just poured the black. he didnt have to hardle touch the throttle to leave a black cloud. but he also had no power, he couldnt hardley pull the small hill to my house. so he put on an aftermarket intake setup, it helped a bit but something was still wrong. so i got in there an a the pipe from the turbo to the intercooler was just sittin there, so he was getting no air. put that back on and he about shit himself. doesnt hardley smoke anymore

Today I noticed that my turbo doesn't seem to spool up like it should. I've been babying it because she ain't feelin good these days. So I put my foot into her a bit to see if I could hear something. I still have my warranty, but I don't know if what I need is covered. I have found in the past that because it's attached to the motor or drive train doesn't mean it's covered on the warranty.

check the driver side boost tube, it can rub up against the power steering lines at the box and create a hole in the boost tube greatly affecting the performance of the turbo.

you can either pull the boost tube off or just look at it by pulling off the driver side fender liner.

the dealer probably pulled that boost tube when they replaced the injectors, it gets in the way of alot of things when working on the driver side. and its possible that when re installing the tube it was installed too close to the power steering lines letting it rub up against it all the time.

In most cases if it's the turbo the truck will run hot under aload.:c: