sRide

Seems to be completely absent in new 2017 F150 with 2200 miles? Its completely spotless. 2013 looked like a locomotive stack for most of its life.

Curious as to what would impact it the most?

1. Port injection?
2. Better CATS?
3. Other?

Delavan

The soot is a direct-injection byproduct I think. Was that 2013 an EB?
The new EB 2017 (and I think the 2018 5.0L) are dual port/direct injected and might be not generating soot.

My 2016 5.0L doesnt generate soot.

sRide

Yes, the 2013 was 3.5 Ecoboost.

rockhillf150

Mine has soot. 2017 3.5EB. Although it is not a ton.

bergsnj

vehicles with turbos generally make a **** load of tailpipe soot. Not sure why this is but its something i have noticed over the years.

SCrewYou

mine did when it was new. cleaned and shined up the chrome tip about 5,000 ago, still clean.

DeltaNu1142

Somewhere on powerstroke.org, someone has posted a link to this thread for the forum's entertainment.

sRide

We do not "roll coal" on this side of the fence.

Delavan

Lol. Trust me, if I had the monies to play with, I would drive a powerstroke F350, not a F-150. Regardless of whether or not I need to tow with it.

But in the end, I could have got a F-250 XLT 6.2L with minimal creature comfort for the same price as my F-150...

Here in Alberta, the boys sure love their diesels...

LTNBOLT

You should have some soot in your tailpipe if you have an ecoboost. It is forced induction so it has to be fat at WOT. Usually the A/F ratio is around 12:1 or fatter at WOT on forced induction engines.

The naturally aspirated 5.0 will have a clean tailpipe. My 2013 5.0 tailpipe was clean. My 2016 5.0 was clean until I put a Procharger on it. With the fatter WOT A/F ratio my tailpipe has soot now.