6.7L Cummins Forum

bobsquarepants · #1 (**permalink**) 10-12-2009, 01:29 AM

So anyone experiance an intermittant exhaust smell in the cab? The odd time I get a strong smell of exhaust and it goes away. I drove an 08 just before I bought my 09 and it did the same thing. Funny though, you smell the tailpipe and it doesn't smell like anything due to all the emissions stuff...but it's definitely not the same smell you get in the cab, its a pure burned diesel smell.

Garlic · #2 (**permalink**) 10-12-2009, 07:55 AM

I have, It sort of smells like a jet is taking off next to you. Don't know what it is but it only does it once in a while.

bobsquarepants · #3 (**permalink**) 10-12-2009, 11:20 AM

yep...smells like a jet

I thought it happens just after I accelerate hard, but it happened to me sitting at a light in stop and go traffic. The first time it happened, I thought it was because the rear slider open and the wind was the right way, but like i said, found out later that there is basically no smell to the exhaust on these trucks. Maybe some sort of partial regen?

steve · #4 (**permalink**) 10-12-2009, 11:45 AM

only had it happen to me once as well, with the slider open ,windows down, thought it was some one in traffic at first ,then realized it was mine, but it went away before I could find the source or what it was... did smell like a jet/turbine , I think the truck was spraying fuel into exhaust to help on a regen because the egt's was not hot enough? don't have gauges so I'm just guesing, but I know they can add fuel upstream in the exhaust, I think its to get the catalist hot? kinda like a gas car running dead rich the cat will even glow it gets so hot from all the raw fuel? don't know hope we find out so i know weather or not to worry about it . I think dodge should have a technical class on these trucks and tell the owners what these things will and won't do/capabilities and functions.... as we pay more attention to what these things do than they think, were not like most drivers who go: was that light even on? was that bad? you know the just get in it and go type.

bobsquarepants · #5 (**permalink**) 10-12-2009, 02:36 PM

i figured it must be a common thing, like i mentioned in the first post, i did drive an 08 the same day I picked up mine and noticed it right away.

Squid · #6 (**permalink**) 10-12-2009, 08:48 PM

I've never had the smell but I'm sure it's because I run the A/C and Heat in recirc to keep the windows clear due to the humidity.

notrader · #7 (**permalink**) 10-13-2009, 12:04 PM

i haven't had the smell, but the source of some road noise on my truck could be the source of the smell you detect. my rear passenger door does not make a tight seal along the bottom. the weather stripping could do a lot better job than it does. i get a lot of road and wind noise from that opening. it could be that you might have a similar problem and under certain conditions, exhaust is drifting into your cab.

I also run my A/C a lot, which might keep my cab clear of any exhaust.

bobsquarepants · #8 (**permalink**) 10-13-2009, 03:54 PM

good thought, come to think of it...seems to me the new 2500 has alot more road noise than the 06 1500 I had. I'll have to check the weatherstrips out.

bobsquarepants · #9 (**permalink**) 10-13-2009, 06:47 PM

I noticed today it's really bad, so i did a google search on '6.7 burned diesel smell' just for the heck of it...and saw someone had the same issue, it turned out to be a EGR cooler gasket that went south...guess im making the call to the dealer next week to have it checked out.

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