|
06-23-2021, 03:00 AM
|
#1
|
Junior Member
Join Date: Nov 2019
Posts: 1
|
Diesel Dust
I just made my 3rd trip in my 2021 Tiffin 38 RED 340 Cummins. It was 150 mi to the dealer for a couple of simple warranty issues. When I got there and got ready to unhook the toad I couldn’t believe it.
The backside of the coach had diesel soot all over it and my white Buick was just covered in soot. I literally had to wash the window before I could drive it and the front end was totally gray/black..
Has anyone seen this issue on a brand new coach(2700mi) and do you think it’s safe to drive it to my freight liner shop which is another 150 miles?
Of course the dealership said they had no idea....
|
|
|
|
Join the #1 RV Forum Today - It's Totally Free!
iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!
You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!
|
06-23-2021, 04:04 AM
|
#2
|
Senior Member
Damon Owners Club
Join Date: Sep 2020
Location: FL
Posts: 358
|
As you already know that is not usual. Soot is from unburned or not completely burned fuel, so you may have a code stored. Can you read the engine's codes? It sounds to me like one injector is over fueling.
Hope you get it solved. Frieghtliner is the place to start.
__________________
2002 Damon Escaper (Sassafras). 3126E Caterpillar, Allison 6 speed.
|
|
|
06-23-2021, 05:29 AM
|
#3
|
Senior Member
Join Date: Jun 2010
Location: CA and TN
Posts: 4,662
|
What I'm perplexed about is that you have a particulate filter along with the DEF system. There should be no soot whatsoever come from your exhaust.
I'm wondering if it is just heavy road dusk. I've never had the dust to the extent that you describe but I always get 'road dust' every time I drive my regular cars, etc. Since I have several white cars, I can run my finger along the back fender/trunk/bumper and have black dust on my finger.
Roads have this dust from tire rubber etc. I just don't think its from your diesel although it does seem excessive as 'road dust' from my experience. If it was your diesel engine, you should have RED lights all over the dash indicating a problem (I would think).
Do you think it might be oil?
Looking forward to seeing what you find out.
Safe travels,
Mark
__________________
2021.5 Pleasure Way Plateau FL Class-B Sprinter (bought May '21)
2018 Mini Cooper Hardtop Coupe, 2 dr. 6-speed manual (toad)
(Sold)2015 Prevost Liberty Coach,(Sold)2008 Monaco Dynasty
|
|
|
06-23-2021, 06:34 AM
|
#4
|
Senior Member
Join Date: Mar 2019
Location: Braidwood Il.
Posts: 8,300
|
I agree with road grime. How's the tail pipe if flaking off an 1/8 thick maybe an issue. Reminds me of when my 2yr grandson found my tail pipe... had soot all over his face like a chimney sweep and I kept finding things in there, bug spray , pop cans, sippy cup, sunscreen ect.
__________________
95 Monaco Crown Royale
M11 400hp, 4060 trans.
Aquahot, Generac Guardian7.5k
|
|
|
06-23-2021, 06:36 AM
|
#5
|
Senior Member
Join Date: Mar 2017
Posts: 305
|
I had a similar problem with my pre emission 330 Cat. But i noticed I also had low turbo boost psi. I replaced the leaky CAC and turbo boost is up to specs and the dust is all but gone now.
|
|
|
06-23-2021, 08:31 AM
|
#6
|
Senior Member
Join Date: Apr 2012
Location: Louisville, KY
Posts: 1,404
|
Agreed that with a def system there just should be no dust. Try to verify heather it is just road grime (my toad definitely gets dusty/dirty). If you still think it is from your engine, have freightliner take a look.
__________________
- 2017 Newmar London Aire -
|
|
|
06-23-2021, 08:31 AM
|
#7
|
Senior Member
Join Date: Dec 2013
Location: Lake Havasu City, AZ & Plover, WI
Posts: 6,403
|
Check the exhaust pipe. If the dust is coming from the engine, the inside of the tail pipe will be black and powdery. It should also be more pronounced on the exhaust side. If it is uniform all over the toad and back of the coach, I would suspect road dust. After 77,000 miles, my tail pipe is still clean to the touch.
__________________
2006 Monaco Executive 44 Denali
2013 43 QGP Allegro Bus ( SOLD )
2013 Avalanche
|
|
|
06-23-2021, 11:34 AM
|
#8
|
"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 23,922
|
Crasher has it right, your tailpipe should be clean enough to eat off of.....obviously easy to check. If it's black, you have an issue.
Keep in mind that the rear of your coach is a BIG vacuum cleaner. It sucks up air and dirt, from under the coach and blows it out the back through the radiator. If you've ever stood back there with the engine running, it can part your hair.
That's why it's so important to flush/rinse the radiator and charge air cooler once a year.
__________________
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
|
|
|
06-23-2021, 02:17 PM
|
#9
|
Senior Member
Join Date: Mar 2019
Location: Lansing MI
Posts: 2,821
|
Gray black could be road dust, I'm thinking that exhaust soot would be pure black and oily. I do agree with checking the exhaust pipe. It could also be an oil leak, they make a mess out of the back of any vehicle and whatever it's towing. Without looking at it or a picture all we can do here is guess. Good luck.
__________________
An Old Fisherman
2017 Nexus Ghost 36DS, 2014 Ford F150 Long Bed
2007 Harley-Davidson Ultra Classic
|
|
|
06-23-2021, 06:12 PM
|
#10
|
Senior Member
Join Date: May 2020
Posts: 667
|
Agree with the above poster that it could be an oil leak if you have ruled out road grime. It doesn't take much oil to make a real mess.
Saw it once from the pumpkin on a Chevy Suburban. The gear oil leaked out and all over an old Land Cruiser I was towing. You would be amazed how much of that gear oil made its way onto the Cruiser. I mean there isn't all that much gear oil in a pumpkin.
__________________
2007 Newmar Kountry Star 8.9 liter cummins
2019 F250 Toad
Blue OX
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|