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Why do new cars smoke? #4804131
07/03/18 02:43 PM
07/03/18 02:43 PM
Joined: Dec 2006
Posts: 19,129
Dallas,Tx USA
aquariuscsm Offline OP
aquariuscsm  Offline OP
Joined: Dec 2006
Posts: 19,129
Dallas,Tx USA
I keep seeing new-newish cars bellowing black smoke out of the exhaust when the accelerate even just moderately. I saw a new Lincoln suv (it said 2.0 ecoboost on the back,maybe an MKX?) accelerate on the hwy to change lanes and black smoke poured out of the exhaust. I see this all the time on new cars only. Why is this?

Please excuse the title typo. Stupid phone touch screen.


1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 5W20

Re: Why do new cars smoke? [Re: aquariuscsm] #4804133
07/03/18 02:44 PM
07/03/18 02:44 PM
Joined: Oct 2012
Posts: 2,329
Northern Ontario, Canada
Danno Offline
Danno  Offline
Joined: Oct 2012
Posts: 2,329
Northern Ontario, Canada
DI engines cleaning some soot out.


2016 Sorento SX V6 AWD
2015 KIA RIO SX
2010 Mazda 3 2.0L
2009 Venza V6 AWD
2013 Sonata 2.4L RIP in write-off crash
Re: Why do new cars smoke? [Re: aquariuscsm] #4804137
07/03/18 02:46 PM
07/03/18 02:46 PM
Joined: Dec 2006
Posts: 19,129
Dallas,Tx USA
aquariuscsm Offline OP
aquariuscsm  Offline OP
Joined: Dec 2006
Posts: 19,129
Dallas,Tx USA
Title came out right haha I guess I edited it in time.


1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 5W20

Re: Why do new cars smoke? [Re: aquariuscsm] #4804141
07/03/18 02:47 PM
07/03/18 02:47 PM
Joined: Mar 2008
Posts: 7,340
USA
slacktide_bitog Offline
slacktide_bitog  Offline
Joined: Mar 2008
Posts: 7,340
USA
GDI and TGDI engines soot just like diesels.

Re: Why do new cars smoke? [Re: aquariuscsm] #4804145
07/03/18 02:50 PM
07/03/18 02:50 PM
Joined: Feb 2015
Posts: 2,361
Slovenia EU
Kamele0N Offline
Kamele0N  Offline
Joined: Feb 2015
Posts: 2,361
Slovenia EU
I dont see that over the pond...Maybe its just because you are using your CAFE oily water in them (sae20) smile


2008 Toyota Yaris 1ND-TV 1.4 D4-D Elf FullTech FE 5w30
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40
Re: Why do new cars smoke? [Re: Kamele0N] #4804177
07/03/18 03:15 PM
07/03/18 03:15 PM
Joined: Feb 2013
Posts: 3,340
Central Virginia
Silverado12 Offline
Silverado12  Offline
Joined: Feb 2013
Posts: 3,340
Central Virginia
Originally Posted By: Kamele0N
I dont see that over the pond...Maybe its just because you are using your CAFE oily water in them (sae20) smile


Yeah, the more I think about it the more I think you're right.


12 Chevy Silverado ext. cab LS, 2WD 4.3 auto
18 Mustang GT 5.0 auto
07 Harley Dyna Street Bob 96 c.i. 6 sp.
00 Mustang GT auto
Re: Why do new cars smoke? [Re: aquariuscsm] #4804180
07/03/18 03:17 PM
07/03/18 03:17 PM
Joined: Jul 2005
Posts: 30,985
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,985
NY
It must be a DI thing in gas engines. hide That's what I've noticed. Diesel is a totally different animal, and not really a fair comparison.


God Bless Our Troops

Re: Why do new cars smoke? [Re: Kamele0N] #4804181
07/03/18 03:18 PM
07/03/18 03:18 PM
Joined: Oct 2002
Posts: 36,629
Great Lakes
Quattro Pete Offline
Quattro Pete  Offline
Joined: Oct 2002
Posts: 36,629
Great Lakes
Originally Posted By: Kamele0N
I dont see that over the pond...Maybe its just because you are using your CAFE oily water in them (sae20) smile

Our fuel mapping over here is different - we run richer fuel mixture to comply with the local emissions regulations. Not sure if that has something to do with it.


'02 530i (Edge 0W-40)
'15 Q5 3.0T (Edge 5W-40)
'18 Charger SRT (PUP 0W-40 SRT)
Re: Why do new cars smoke? [Re: Silverado12] #4804185
07/03/18 03:28 PM
07/03/18 03:28 PM
Joined: Dec 2006
Posts: 19,129
Dallas,Tx USA
aquariuscsm Offline OP
aquariuscsm  Offline OP
Joined: Dec 2006
Posts: 19,129
Dallas,Tx USA
Originally Posted By: Silverado12
Originally Posted By: Kamele0N
I dont see that over the pond...Maybe its just because you are using your CAFE oily water in them (sae20) smile


Yeah, the more I think about it the more I think you're right.


Funny thing,I wondered this very same thing. Can thin oils get past the rings easier when you put your foot in it vs thicker oils?


1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 5W20

Re: Why do new cars smoke? [Re: aquariuscsm] #4804189
07/03/18 03:34 PM
07/03/18 03:34 PM
Joined: Dec 2011
Posts: 5,109
North Carolina
rooflessVW Online content
rooflessVW  Online Content
Joined: Dec 2011
Posts: 5,109
North Carolina
DI cars do it. Most have sooty tailpipes. Oil weight is irrelevant.


"Zed's dead baby, Zed's dead."
Re: Why do new cars smoke? [Re: aquariuscsm] #4804197
07/03/18 03:42 PM
07/03/18 03:42 PM
Joined: Oct 2014
Posts: 12,582
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 12,582
Idaho
Originally Posted By: aquariuscsm
Originally Posted By: Silverado12
Originally Posted By: Kamele0N
I dont see that over the pond...Maybe its just because you are using your CAFE oily water in them (sae20) smile


Yeah, the more I think about it the more I think you're right.


Funny thing,I wondered this very same thing. Can thin oils get past the rings easier when you put your foot in it vs thicker oils?
Oil smoke is blueish in color.


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: Why do new cars smoke? [Re: aquariuscsm] #4804207
07/03/18 03:55 PM
07/03/18 03:55 PM
Joined: Mar 2010
Posts: 654
NY
mx5miata Offline
mx5miata  Offline
Joined: Mar 2010
Posts: 654
NY
Definitely not oil weight related. Just a direct injection thing I've seen it as well.


NAPA FULL SYNTHETIC 0w20 Partsplus oil filter
Wix air filter
Re: Why do new cars smoke? [Re: aquariuscsm] #4804216
07/03/18 04:14 PM
07/03/18 04:14 PM
Joined: Aug 2013
Posts: 406
Alberta
tcp71 Offline
tcp71  Offline
Joined: Aug 2013
Posts: 406
Alberta
My 2016 eco 3.5 DI dual turbo does no such thing. I also run 0w40, but haven't seen this phenomenon around here. Perhaps it's clearing out the condensation/PCV oil mist that has accumulated in the intercooler.


2016 F150 Eco: Edge 0w40
2005 Sienna 3.3: mobil 0w40 (varies)
Re: Why do new cars smoke? [Re: aquariuscsm] #4804227
07/03/18 04:26 PM
07/03/18 04:26 PM
Joined: Oct 2010
Posts: 1,753
PA
123Saab Offline
123Saab  Offline
Joined: Oct 2010
Posts: 1,753
PA
My GTI will let out a DSG downshift burp accompanied by a small black puff of smoke when I floor it.

No manners at all.


Anything can happen
The tallest towers be overturned
Those in high places be daunted
Those overlooked regarded
- Seamus Heaney
Re: Why do new cars smoke? [Re: aquariuscsm] #4804231
07/03/18 04:33 PM
07/03/18 04:33 PM
Joined: Dec 2005
Posts: 690
Virginia
cpayne5 Offline
cpayne5  Offline
Joined: Dec 2005
Posts: 690
Virginia
At or near wide open throttle, many cars enter open loop. Those puffs of smoke are usually due to a rich AFR while in that state.

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