Originally Posted by StarfishFD

Could you go into a little more detail about this idea...⬆️⬆️⬆️⬆️


I've been driving her around. And it's not too bad on a straight road..
But when I hit a hill, or put any kind of load on the engine. She smokes like a Choo Choo....😤

Maybe it is the turbo..... 🤔

Originally Posted by TooManyToys.

You may not have the same issue, but it's worth checking.

The truck showed no faults. Every thing looked good and I even pulled the turbo since looking in the down pipe showed a hint, but not what should have been expected considering the smoke I was generating. It wasn't just at starting, which was very light, but after driving being at a stop sign or light would be embarrassing.

AE showed nothing due to compensated control. IDS hot both comp'd and uncomp'd showed minimal variation. It wasn't until I did dead cold that number 7 showed it wasn't contributing as much. And it was a moderate drop. I changed it out not really sure that was the true problem child. But as soon as it was changed all trace of smoke stopped.


I've had a little start up smoke this winter and a quick IDS check indicated two injectors, #3 and #5 are down a little, but I need an opportunity to do proper cold and hot checks to investigate this more.

Originally Posted by Rusty Axlerod

Both engines smoking is possible but seems unlikely. I was thinking on where oil could have stayed on the truck. Sounds like you've been through the cold side air stuff and the exhaust also. I agree an injector sounds likely but you need some diag equipment to narrow down which one (s). Fuel or oil contamination is an outside posibility.

A couple of years ago, I put a small bottle of ZDDP in my oil. The exhaust smell was terrible and as you described-eye burning. It smoked a little, mostly cold, and you could smell it inside a car a couple vehicles behind it at a stoplight. It lingered a little into the next oil change even.

Originally Posted by TooManyToys.

I picked up IDS rather then trying to deal with AE anymore. But .... my understanding is you can utilize AE looking at some fuel PIDs, but I never tried it. I think NAPA may have a video or posting that goes through the check.

Originally Posted by StarfishFD

I haven't flipped the cap over and checked. Will try that tomorrow. But I did reroute the ccv, to no avail...

Any idea what the fuel pulse width reading is supposed to be? It's one of the readings I have a discrepancy on between the two trucks.

Also, every so often my IAT2 reading will be lower than my IAT reading...

Also discrepancy in the Mass fuel desired readings

And volume fuel desired

I realize it's two different trucks, but both 04s. One smokes and one doesn't....

Originally Posted by Rusty Axlerod

I've just been over this on my own truck so I have the notes right here

With factory software, the range is 400us (microseconds) to 5.8ms (milliseconds). It's common to see the full pulse of 5.8ms on a cold start and around 800us at warm idle. If I remember correctly, there is only one reading, with the tools I have I cant see each individual injector.

Originally Posted by run6.0run

You could drive the truck,, and disable each injector while driving. When the smoke stops,,, there ya go. This is assuming that fuel is the smoke tho. I normally see white smoke with failed turbos,, and blue with injectors.