Blowing black smoke when flooring accelerator

[moviewithnotitle]

I have something similar to this. It's not black smoke, but some black. It happens on WOT, at high RPM's. Picture launching out of a toll plaza and getting up to 70 ASAP. This is the ONLY time that I would get this condition, normal driving never. I have seen new cars do this as well under heavy acceleration, so I have never been concerned.

I would think that if you noticed a change in MPG, sluggish acceleration, tough starting, misses etc, that you could have a bigger issue that is causing what you described. I don't have any of that, I have had my truck maintained regularly and it was tuned up within the last year, so I have not been concerned about it. Best I could think is that some oil is getting into the cylinders, but never enough to cause a concern. I change the oil at 5k, and it's never below the optimum range for oil.

 

[LVNeptune]

^^^^ exactly what I was thinking.

I figured there had to be people in the same situation and I too have seen newish trucks do the same thing and they are definately not diesel.

 

[SunlitComet]

That Delphi spider should be the only bang you should ever use period. It will have a new fuel regulator already installed. you will need to get a hold of scanner with live data view and I should be able to get you the values on what you should see. Any chance your vehicle may have been previously tuned performance wise?

 

[LVNeptune]

Doubtful it was ever tuned. Any android/iPhone data viewer you can recommend ?

 

[SunlitComet]

http://www.palmerperformance.com/products/dashcommand/index.php plus required hardware interface. that will depend on phone connectivity option but USB, Wi-fi and bluetooth are available. I actually use the windows based ScanXL pro software with the gm add-on from them.

 

[NOVAhoe]

my stepdad always told me it was from carbon buildup in the combustion chambers thats burning off at higher rpms, mine used to do it, but after my tune and now that my foots always down i havent noticed it at all haha

 

[LVNeptune]

With that logic wouldn't it eventually stop if I continuously forced it?

 

[LVNeptune]

Also update: there seems to be a lot of water coming out of the tailpipe. Clear water doesn't look like coolant. May or may not be related

 

[Chevyrider619]

I have water also coming out the muffler. I even smelled it to see if it was antifreeze but no..

 

[LVNeptune]

It made a puddle and I grabbed some of the water and it had carbon deposits in it lol. The water is cleaning it out.

Thinking about it, it might be when I backed into the lake a few days ago, it might have been stuck in the muffler.