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08-18-2016, 01:30 PM
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#1 |
 Drives: 2016 2ss Join Date: Aug 2016
Location: RI
Posts: 179
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Long crank cold start
Hello, i recently purchased a 2016 2ss and im very pleased with the car however I believe this car may have been a demo car for the dealership (if thats even such a thing). it had 90 miles on it when i purchased and had a pretty solid price decrease on it that they would only offer on this vehicle not the other 2ss's in their lot. Due to this I've been overly critical of the car because its new and i expect everything to be perfect.
I may be going crazy but what are your thoughts on this cold start of my car?  https://youtu.be/ga3jd8zA4kc |
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08-18-2016, 01:33 PM
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#2 |
         Drives: Car Join Date: Jun 2010
Location: Place
Posts: 3,361
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Sounds normal to me. DI motors crank a little longer than wet ports do.
From what I've seen/read, it's has to do with having the hi-pressure pump in the manifold area having to get up to PSI to inject fuel, unlike a near-port just being fed off PSI from the rear -- which ramps up much faster. DI fuel pressures are something like 2100 PSI over the ~60PSI of older LS3 using in-tank pump only. |
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08-18-2016, 02:06 PM
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#3 |
Drives: 2016 SS Join Date: Jun 2011
Location: Newark, NY
Posts: 1,284
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Normal. Mine starts the same.
90 miles isn't like a sales manager drove it to work every day or anything. GM gives the dealership money to discount individual vehicles based on a number of factors - my car had a similar extra $1000 discount while other Camaros did not. Don't look at it under a microscope - drive and enjoy it, and be happy about the extra discount.
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08-18-2016, 02:28 PM
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#4 |
Drives: 16 Camaro SS Join Date: Jul 2012
Location: Menifee
Posts: 820
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Mine does the same thing. It idles at around 1000 rpm for 30 - 40 seconds and then drops to 500 rpm.
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Interior: Adrenaline Red. SS/2SS, M6, NPP, Sun Roof, 8" Nav. Black 5 Spoke Wheels.
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08-18-2016, 02:50 PM
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#5 |
 
Drives: 2017 2SS Join Date: Apr 2016
Location: USA
Posts: 380
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Same as mine. It's normal. Higher idle RPM at the beginning of a cold start is most likely to quickly bring the catalytic converters to optimal temperature. Although 30-40 seconds is about twice as long as they should need.
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2017 HBM 2SS A8|F55|NPP|H01|IO6|RIK|WGL|56R
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08-18-2016, 02:59 PM
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#6 |
Drives: 2018 ZL1 Join Date: Feb 2016
Location: Scranton pa
Posts: 308
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Yep, rest assured it's totally normal. As mentioned with the direct infection it takes time for the mechanical pump to boost up fuel pressure. They all do it!
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08-18-2016, 03:36 PM
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#7 | |
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Drives: 16 Camaro SS Join Date: Jul 2012
Location: Menifee
Posts: 820
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Quote:
  Sorry, had to do it.
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Interior: Adrenaline Red. SS/2SS, M6, NPP, Sun Roof, 8" Nav. Black 5 Spoke Wheels.
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08-18-2016, 03:36 PM
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#8 |
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Drives: 2016 2ss Join Date: Aug 2016
Location: RI
Posts: 179
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Thanks for the quick responses. This makes perfect sense. This is my first di vehicle so I completely overlooked that
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08-18-2016, 05:07 PM
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#9 |
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Drives: 15 SilveradoLTZ,162SSVert BlazerRS Join Date: Dec 2015
Location: Minot,Maine
Posts: 644
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Same as Mine, Its Normal!!!! Now,Relax and ENJOY!!!!!
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08-18-2016, 06:08 PM
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#10 |
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Drives: 2016 camaro ss Join Date: Oct 2010
Location: Spring, TX
Posts: 1,127
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Car and driver had a chart one issue with cold cranking times for the lt1. If I remember right, it was up to 7 seconds in the coldest environments
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2016 camaro 2SS hyper blue/Kalahari, A8, MRC, NPP, sunroof, SW headers through axleback, Circle D 3600rpm TC, Pray ported IM/TB, E85
Sold: 2002 Z28, NBM, M6, 460rwhp, 2009 HHR SS RIP : 2002 WS6 Black, A4, 355rwhp |
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