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12-03-2021, 06:00 PM
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#1 |
 
Drives: 2018 Camaro ZL1 M6 Join Date: Jul 2019
Location: AZ
Posts: 45
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White smoke on start up
My car is only driven on the weekend and after sitting all week, it huffs out a white cloud of smoke that smells fat as hell. Im not using any coolant, so I think I may have an injector leaking. Anyone else experience this or think I am off base on my thoughts? I will be taking it in but I wanted to get some other opinions as well. Thanks.
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12-03-2021, 07:39 PM
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#2 | |
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2020 Shadow Gray 2SS
Drives: 2020 2SS - A10, NPP, MRC, CAI Join Date: Dec 2019
Location: SoCal
Posts: 3,029
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Quote:
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2020 SGM 2SS - A10, NPP, MRC, Red Calipers, Black Camaro Fender Badge, Footwell Lighting
Added after delivery: - GMP CAI, GMP Black Strut Tower Brace, MRR017 1LE Wheels, SS Armrest, Black Fuel Door, Stainless Sport Pedals, SS Wheel Caps, Black Lugs/Locks, GM Splash Guards, DD Smoked LED Markers, Smoked Rear Reflectors, Mishimoto Catch Can, Xpel PPF - Full Front, SunTek 35% Tint, CeramicPro coating, RST Stainless Brake Lines, Castrol SRF, MSD Super Conductor Wires Left: My "fun" ride. Right: My "work" ride: a Gulfstream G600. One's top speed is 180 Mph, the other, 620 Mph...  |
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12-03-2021, 07:41 PM
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#3 |
          
Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016
Location: Georgia
Posts: 5,813
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Gas smell I’m thinking.
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ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.
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12-03-2021, 07:44 PM
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#4 |
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Drives: 2022 CT4-V Blackwing Join Date: Sep 2013
Location: Florida
Posts: 2,723
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The only time I have seen white exhaust smoke was when I had a head gasket leak.
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2002 Corvette Z06 - Black - Sold
2013 Camaro SS 1LE - Black - M6 - Sold 2016 Camaro SS - Mosaic Black - A8 - Sold 2017 C7 Stingray - M7 Coupe - Sold 2019 C7 Grand Sport M7 Vert - Sold 2021 Camaro ZL1 - Black - A10 - Sold 2019 Tesla Model 3 2022 CT4-V Blackwing - M6 |
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12-03-2021, 07:51 PM
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#5 |
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Account Suspended
Drives: 2017 Camaro ZL1 A10 Join Date: May 2012
Location: NJ
Posts: 7,692
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Are you sure it's not just some condensation from sitting for a week? How is it driving? Does the smoke go away? Was it just the one time or is it all the time?
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12-03-2021, 08:03 PM
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#6 | |
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Drives: 2018 Camaro ZL1 M6 Join Date: Jul 2019
Location: AZ
Posts: 45
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12-03-2021, 08:04 PM
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#7 | |
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Drives: 2018 Camaro ZL1 M6 Join Date: Jul 2019
Location: AZ
Posts: 45
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12-03-2021, 08:09 PM
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#8 | |
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Drives: 2018 Camaro ZL1 M6 Join Date: Jul 2019
Location: AZ
Posts: 45
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I really appreciate all the questions! |
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12-03-2021, 08:09 PM
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#9 | |
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Drives: 2022 CT4-V Blackwing Join Date: Sep 2013
Location: Florida
Posts: 2,723
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Quote:
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2002 Corvette Z06 - Black - Sold
2013 Camaro SS 1LE - Black - M6 - Sold 2016 Camaro SS - Mosaic Black - A8 - Sold 2017 C7 Stingray - M7 Coupe - Sold 2019 C7 Grand Sport M7 Vert - Sold 2021 Camaro ZL1 - Black - A10 - Sold 2019 Tesla Model 3 2022 CT4-V Blackwing - M6 Last edited by raptor5244; 12-04-2021 at 04:41 AM. |
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12-03-2021, 08:33 PM
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#10 | |
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Drives: 2018 Camaro ZL1 M6 Join Date: Jul 2019
Location: AZ
Posts: 45
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12-03-2021, 08:37 PM
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#11 |
Drives: 19 Chevrolet Camaro 2SS 1LE Shock Join Date: Apr 2020
Location: BC, Canada
Posts: 1,947
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Some gas smell at startup is normal since your engine runs a bit rich when you cold start it(as the fuel doesn't vapourize as well) and your catalytic converter is still cold.
If it's not a very thick smoke then it's just some water vapour. Besides, if you are running rich, your car should be puffing out black sooty puffs.
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2019 Chevrolet Camaro 2SS 1LE M6 Shock GM Performance Intake and that's it, because driver mods before car mods Past: 2009 Mazda RX-8 GT M6 Velocity Red Mica (Sold) 2015 Chevrolet Corvette Z51 2LT M7 Velocity Yellow Tintcoat (Flood totaled) |
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12-03-2021, 09:02 PM
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#12 | |
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Drives: 2018 Camaro ZL1 M6 Join Date: Jul 2019
Location: AZ
Posts: 45
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Quote:
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12-03-2021, 09:07 PM
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#13 |
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Drives: 2018 Camaro ZL1 M6 Join Date: Jul 2019
Location: AZ
Posts: 45
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The tailpipes are black like many DI engines but I don't believe it should be smoking like this at start up. I realize all motors are a little different but why would mine smoke like that and most not with the same factory tune?
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12-03-2021, 11:07 PM
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#14 |
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Account Suspended
Drives: 2017 Camaro ZL1 A10 Join Date: May 2012
Location: NJ
Posts: 7,692
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It does not sound like anything is out of the ordinary. If it happened all the time and didn't clear then that would worry me. But it seems like it is happening only at initial startup and only after sitting for a week. Even tho you're in desert climates you can still get condensation if it sits overnight and definitely after a week of sitting. Or so I would think. The fuel smell is at startup because gas powered engines tend to run rich at first start since they are in open loop. Which is also why the EGR system recirculates exhaust gases thru the intake to help warm the intake quicker so it can get into closed loop. Also at startup you'll notice the engine RPMs are a little higher for those first few seconds. Sorry if my explanations are a bit jumbled but I've had a LOT to drink tonight.
Anyway, it all sounds normal to me. The engines and ECUs are soo sensitive these days that if you did have an issue then you would have seen a CEL and reduced power mode. Or you for sure would see billowing clouds of smoke and it would just get worse. As well as your coolant would decrease. None of that is happening so I'm of the opine that it is just initial start after a week of sitting and collecting condensation. Take it for an extended drive and get on it a few times and enjoy it and see if you have any issues. |
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