2015 6.7 KR... when idling for long periods of time the cab starts to smell like exhaust.

I've also noticed when standing outside the truck with it idling (not in regen), it freaking stinks, bad! My 2003 never had this problem and idled for days (literally).

Possibly leaky gasket here or just the nature of the 6.7?

 

Is this with the air/heat (no recirc) turned on or all of that off? I know with my truck, the recirculation option will only stay enabled for about 10 minutes with the heat. So if the truck is idling any longer than that and the recirc turns off, the cab fills with the smell of the exhaust. Unsure if that's changed with 2015. If you have air with recirc on, cab should be fine.


If you mean the smell doesn't smell like diesel, that is how the new emissions (SCR) diesels smell. It doesn't smell good and certainly not what your 7.3L smelled like.
In fact, if anyone smells the old diesel smell on a stock 6.7L, that would be an issue.

 

why the excessive idling? Just burning fuel unless you are trying to stay warm.


It also produces more soot, requiring more regens...which burns more fuel.

 

Exhaust smell inside the cab is not normal. However on a new truck you can get a hot exhaust smell that might waft into the cab during or right after a regen.

That said, you should NEVER subject these motors to extended idling. It's only going to cause big problems down the road. Modern emissions systems on diesels do not handle extended idling very well at all.

If you're already subjecting it to a massive amount of idling, you may already be having early signs of emissions problems if you're getting unusual smells. Or maybe there's a defect.

 

Come tell me not to idle my truck when it's -20*F outside.

Ford idled trucks at -40*F for a couple weeks. Posted video on youtube about the testing.

 

Not sure about the exhaust smell in the cab, haven't experienced that, but before I deleted mine, it definitely had a different smell. I assume it has something to do with the Urea.

 

Maybe the little flaps between the back of the cab and the bed are stuck open.

 

There is a youtube video on this. In fact I have to do my '14 because I get the smell in my cab too. Basically you have to tighten a nut on the right side, its kind of hard to get too. It seems Ford forgot to tighten this nut on the assembly line.

 

Yep. There is also a recall addressing this but don't have the specific info on hand at the moment. Anyway, take a look at this video. I know there are more videos on this subject but this is the first one I found with limited time looking...

 

That's about as crappy as any vid I've ever seen posted on You Tube. But it at least gives me an idea of what to look for as I get a little whiff of exhaust occasionally that i really don't care for.
Thanks

Maybe I'll find the TSB too

 

It's your truck, feel free to take or ignore advice. But don't bash advice given.

Marketing videos aren't always representative of real-world results. Keep that in mind when you have to replace your DPF far sooner than the stated service life.

 

Or, you make excessive amounts of oil and very frequent regens and a clogged EGR cooler to boot.

 

I had this issue and it turns out that two bolts had worked themselves loose on the exhaust and was allowing a little leakage. Go inspect, hopefully you will spot the problem.

 

I found a couple TSB on this issue - not necessarily easy fixes though as the vid shows

11-6-22
and
10-22-9

.....and found here at least on the '11s: Fulltext TSBs - Ford-Trucks.com

 

Yes, agreed on the vid. And Doh! I didn't bother to look at the 6.7L Tech folder sticky as there is a thread mention in there about the cab exhaust smell. I had the same thing happen in mine, noticed it was worse when I was backing my truck into my driveway. I found the same issue where I needed to tighten that nut and the cab exhaust smell ceased.

Exhaust in Cab?