Question: 2016 regen smoke - Page 2 - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
Home Forum Market Place Garage Tuning Library DTC Tool Register Vendors
Go Back   Diesel Place : Chevrolet and GMC Diesel Truck Forums > GM Diesel Engines > Duramax Fifth Generation: 2011-2016 (LML)
Register FAQ Forum Rules My Replies My Threads Advertise


Duramax Fifth Generation: 2011-2016 (LML) Discuss the fifth generation (2011-2016) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.


DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Like Tree1Likes

Reply
 
LinkBack Thread Tools
Old 03-22-2019, 06:05 AM   #11 (permalink)
JBear
Clutch
 
JBear's Avatar
 
Join Date: Jun 2016
Location: New England
Posts: 54
iTrader Score: 0 reviews

Mine only does under load, which can be as simple as maintaining speed on the highway when the incline changes a little. That said, it isn't linear based on load, it's more like a light switch. It either smokes a lot or not at all, with a crack of the throttle.

__________________
-Jess
'18 LBZ 3500 LP5~ Cancelled!
'15 LBZ 3500 Z71~ 140,ooomi. and counting; Considering options
'98 Ram 2500 6.0L 12V~ 583,ooomi. and parking; Towing twins, ported head, balanced motor, custom cam, benched pump, too much trans to list, yadda yadda yadda...
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 03-22-2019, 10:39 AM   #12 (permalink)
BanksLB7Duramax
Diesel Champ
 
BanksLB7Duramax's Avatar
 
Join Date: Apr 2006
Location: Farmington, MN
Posts: 1,599
iTrader Score: 0 reviews

I agree, either a load or it does it under heavy throttle, which for me is always. If you can’t find the gas pedal you probably won’t see the white smoke.

__________________
2012 CCLB 3500HD Z71 Appearance Package Dmax/Alli
275/70-18 Cooper ST Maxx - Air Lift Bags - Viair Onboard Air - B&W Turnover Ball
Wishing it sounded like my old LB7 with Banks exhaust. . . . . . .
MY FUELLY PAGE LINK

1984 C20 6.2 J Code TH400
Offline   Reply With Quote Quick reply to this message
Old 03-28-2019, 09:26 AM   #13 (permalink)
MrCB
Gear Grinder
 
Join Date: Jun 2012
Posts: 4
iTrader Score: 0 reviews

My 2015 Silverado 3500HD never smokes when in regen. I can hardly even tell when its in regen. I pull a 14,000 lb 5th wheel with it but it sees a lot of driving by itself without the trailer also.
__________________
2015 Silverado 3500HD LML

Last edited by OkDually; 03-28-2019 at 09:40 AM. Reason: sig
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 03-28-2019, 07:51 PM   #14 (permalink)
JBear
Clutch
 
JBear's Avatar
 
Join Date: Jun 2016
Location: New England
Posts: 54
iTrader Score: 0 reviews

If it doesn't smoke, how do you even know it's in regen? Unless you're watching the mpg drop for no good reason. My '15 gives me no indication at all. Only truck (other Chevy's included) I've ever driven that didn't have something pop up in the DIC to say that it's in regen.
__________________
-Jess
'18 LBZ 3500 LP5~ Cancelled!
'15 LBZ 3500 Z71~ 140,ooomi. and counting; Considering options
'98 Ram 2500 6.0L 12V~ 583,ooomi. and parking; Towing twins, ported head, balanced motor, custom cam, benched pump, too much trans to list, yadda yadda yadda...
Offline   Reply With Quote Quick reply to this message
Old 03-29-2019, 12:09 PM   #15 (permalink)
lynn1130
Diesel Apprentice
 
lynn1130's Avatar
 
Join Date: Nov 2004
Location: Phoenix
Posts: 343
iTrader Score: 0 reviews

Mine does not smoke during regen either.
__________________
2014 Chevy Silverado Duramax LML Crew-cab LTZ, short-bed, 4wd.
Fumoto Drain Valve
Air Lift Loadlifter 5000 Airbags
Kennedy Lift Pump
Edge Insight

Sold: 2004 Duramax LB7


2011 3010 Heartland Cyclone HD 35' Toyhauler
Offline   Reply With Quote Quick reply to this message
Old 03-29-2019, 08:39 PM   #16 (permalink)
ktmrfs
Diesel Boss
 
Join Date: Jul 2004
Location: Portland, OR
Posts: 1,454
iTrader Score: 0 reviews

on the highway mine doesn't smoke. If it is doing a regen during in town driving with lots of stop and go, it will smoke on moderate acceleration after waiting for a red light.
__________________
2015.5 Sierra Denali CC/SB/4x4 Stone Blue Metallic/Jet Black Interior
pinstriping by Bob Spencer AKA "spirit", undercover FLEX tonneau cover, color matched bug shield and vent visors, raintracker rain sensing wipers, X-treme coating bedliner, gm trailering camera system, coolant filter, Bilsteins, remote tailgate lock

04.5 LLY CC/SB/4x4 Allison Dark Green Metallic/Dark Charcoal Grey Interior
Webasto Hollandia Sunroof, Carbon Fiber Interior Trim, color matched bug shield & vent visors X-treme coating bedliner, Access roll top cover, Westin Step Bars, Lubrication Specialists Aux fuel filter, coolant filter, CAI, Michelin LTX tires, Manual High Idle Mod, Bilsteins, prodigy brake controller, raintracker rain sensing wiper controller, Remote autolocking tailgate, Reese Titan Class V hitch, Allison badges, Pinstriping by Bob Spencer, 4x4 decals removed, color matched door handles, 4 headlight mod, Homelink console.

97 Mercedes SL500, red with tan interior 97 Mercedes E420 sedan, royal indigo with grey interior 2001 KTM400EXC, 2011 Outback 295RE travel trailer
Offline   Reply With Quote Quick reply to this message
Old 03-29-2019, 11:09 PM   #17 (permalink)
BanksLB7Duramax
Diesel Champ
 
BanksLB7Duramax's Avatar
 
Join Date: Apr 2006
Location: Farmington, MN
Posts: 1,599
iTrader Score: 0 reviews

Exactly. I’ve never seen it on the freeway.
__________________
2012 CCLB 3500HD Z71 Appearance Package Dmax/Alli
275/70-18 Cooper ST Maxx - Air Lift Bags - Viair Onboard Air - B&W Turnover Ball
Wishing it sounded like my old LB7 with Banks exhaust. . . . . . .
MY FUELLY PAGE LINK

1984 C20 6.2 J Code TH400
Offline   Reply With Quote Quick reply to this message
Old 03-30-2019, 12:50 AM   #18 (permalink)
Ted White
Diesel Champ
 
Ted White's Avatar
 
Join Date: Jun 2007
Posts: 1,804
iTrader Score: 0 reviews

As already mentioned, in past years, smoke during regens was an indication that too much fuel, or a badly formed spray of fuel, was being injected during regens, particularly on models with the 9th injector. If my truck was smoking during regens, I would want to check whether the 9th injector was faulty.
__________________
2019 GMC Sierra 3500 HD SLT SRW
Offline   Reply With Quote Quick reply to this message
Old 03-30-2019, 07:38 AM   #19 (permalink)
JBear
Clutch
 
JBear's Avatar
 
Join Date: Jun 2016
Location: New England
Posts: 54
iTrader Score: 0 reviews

I dunno about spray pattern, but I can definitely believe there's too much, based on the hit my mpg numbers takes when it happens.
__________________
-Jess
'18 LBZ 3500 LP5~ Cancelled!
'15 LBZ 3500 Z71~ 140,ooomi. and counting; Considering options
'98 Ram 2500 6.0L 12V~ 583,ooomi. and parking; Towing twins, ported head, balanced motor, custom cam, benched pump, too much trans to list, yadda yadda yadda...
Offline   Reply With Quote Quick reply to this message
Old 03-30-2019, 09:22 AM   #20 (permalink)
Ted White
Diesel Champ
 
Ted White's Avatar
 
Join Date: Jun 2007
Posts: 1,804
iTrader Score: 0 reviews

According to a friend who worked on the original fuel programming team for the 9th injector trucks, the spray pattern from the nozzle is critical to proper burning of the injected fuel. There is a complex interaction between the DOC, the 9th injector, and the DPF, to ensure that oxygen released from the exhaust gasses by the DOC is properly utilized by the injected fuel to increase exhaust gas temperatures. If the 9th injector spray droplets are too large, or there is too much fuel being injected, white smoke will be produced due to incomplete combustion of the fuel. This will be most noticeable during periods of acceleration while a regen is underway, because even more fuel is injected during acceleration. So, if it was my truck smoking during regens, I would be suspicious that the system is not working correctly.

__________________
2019 GMC Sierra 3500 HD SLT SRW
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Diesel Place : Chevrolet and GMC Diesel Truck Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

PLEASE READ! You must check your email inbox for the confirmation link to complete registration. Please check your spam box if you do not see the email in your inbox.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in



Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
LML: White smoke while in regen dupupp Duramax Fifth Generation: 2011-2016 (LML) 13 02-18-2019 11:44 PM
900 mile regen trigger on 2016 Kennedy Duramax Fifth Generation: 2011-2016 (LML) 35 06-06-2017 09:12 AM
LMM: crank, no start, erratic misfire codes only justaguy Duramax Fourth Generation: 2007.5-2010 (LMM) 13 08-26-2016 07:44 PM


All times are GMT -4. The time now is 08:04 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
© AutoGuide