Running Rich - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
Problems and Service Talk about any mechanical problems you are having

 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 01-09-2014, 12:22 PM Thread Starter
Prospect
 
Join Date: Jan 2013
Location: Windsor Ontario
Posts: 21
Running Rich

Hi everyone, Im new here, and a relatively new cobalt owner, I purchased a 2007 Cobalt SS sedan 2.4L and have had it for about 9 months, no problems up until about 2-3months after installing a Injen CAI system. I have noticed my car slightly (and I mean slighly chugging) while idle at lights a few weeks ago. and just assumed it was regular engine behavior as it was not extremely noticeable.

Now the last 4 days the weather here has been very abnormally low, talking -25f to -30f at its worst.
The first day of this cold snap I was driving my car like normal, no issues at all. Now I work midnights so when I got up that same day for work, 12 midnight, I could not get my car to start at all.. All it seemed to want to do was basically struggle to start.. start for half a second to a second and chug/shake and die out.
I had full power to lights,radio, etc. Tried jumping with still no success. I started to think starter.. but then thought it couldnt be the starter as it was making normal starting sounds and not just clicking.
I got fed up with my car after 3 days of not getting it to start/troubleshooting myself. I brought my car in and the mechanic basically started it no problem by pushing the gas pedal down first and then turning it over.
then they tested my battery, turned out to be fine. starter, fine. alternator fine. So basically after all these tests, the mechanic told me my car is running way to rich and that my engine was flooded (im assuming this is from me trying to start it so many times with no avail.) and told me to change my spark plugs, and go floor my car on the expressway to get the extra fuel out of my engine. and fill my tank after with fresh gas.

Basically im just looking for some advice/tips etc as to what I should do.
Im going to be replacing the spark plugs either way as my car is at 120k kms and I dont know if/when the previous owner had them replaced at all.
I also know that after installing a CAI a tune is recommended to reconfigure the air/fuel ratio, that leads me to my next question, if anyone can help me tune my cobalt??? or give me a push in the right direction to get my cobalt tuned? I live in Windsor Ontario, it would be awesome if someone local could get in contact with me.

Feel free to ask any more questions I will check back often!
Thank you very much
Rob
Ownag3soup is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 01-09-2014, 01:06 PM
YourCobalt of the Quarter Winner
YourCobalt of the Month Winner


 
BankerBalt's Avatar
 
Join Date: Oct 2010
Location: Eagan MN
Posts: 4,647
Garage
Put your stock airbox back on for the winter. Or make it a short ram for the winter. Your problem is the air coming in is so cold and its putting so much fuel in during start up. Yes replace your plugs. No you do not need a tune for an intake and youd be wasting your money to even do that.

Forged L61 BW S252 Turbocharged Showoff Thread
BankerBalt is offline  
post #3 of 7 (permalink) Old 01-09-2014, 02:32 PM
Cobalt Specialist


 
Join Date: Jun 2011
Location: Charlotte, NC
Posts: 1,145
Bankerbalt is correct. The air is colder=denser. You can pull out your spark plugs to examine the wear condition, but that's what I would point my fingers as well. They tell you everything about what goes on inside your engine. If you tried starting it multiple times, then you probably flooded the engine...not horrible, just need to get it out. I would disconnect your fuel injectors, try cranking it a few times, then reconnect them before you put in the new spark plugs. It will push some leftover fuel out of the combustion chamber.

And you do not need a tune for an intake, the PCM has a learn ability with just an intake slapped on there. We call it "Adaptive Strategy"

2009 Cobalt LS XFE U74
Mods: K&N Typhoon Intake, Option Cat-Back Exhaust, Cosmo Short shifter, Maxxim Ahead 17X7's, MPx shorty antenna, FE5 Strut/shocks, Tein S Techs, Moog endlinks, Moog spring seaters, ZZP shorty header, LSJ downpipe, LNF front grille
5t3alth is offline  
 
post #4 of 7 (permalink) Old 01-09-2014, 02:44 PM Thread Starter
Prospect
 
Join Date: Jan 2013
Location: Windsor Ontario
Posts: 21
Awesome guys, thank you for your advice! But I just read your post 5t3alth after I just changed my plugs now :( could I theoretically disconnect the fuel injectors and try cranking it a few times with the new plugs in? Or would you recommend taking them back out? Basically starting over
Ownag3soup is offline  
post #5 of 7 (permalink) Old 01-09-2014, 02:59 PM
Initiate
 
Join Date: Jan 2014
Posts: 40
Garage
I have a injen cai on my ss/sc. It has been freezing cold here lately and 0 problems. Could possibly be a fuel pump issue as well.
Flex2.0 is offline  
post #6 of 7 (permalink) Old 01-09-2014, 03:05 PM
Levee
YourCobalt of the Month Winner
YourCobalt.com Premium Member
Admin


 
Leveecius's Avatar
 
Join Date: Aug 2009
Location: Battle Creek, MI
Posts: 3,210
Garage
Send a message via Yahoo to Leveecius
It honestly could be flooding. If you can't get it to start, ALL cars are equipped with a fail safe flood out mode where you push the accelorator down to WOT and it will stop pumping fuel in the cylinders if the engine is NOT running.

However I would definitely change/check your plugs. Make sure they are gapped correctly and that will have a HUGE impact on how your car will run at startup and how it runs after.

'09 SS/TC - Stolen
Mods - Injen CAI, CIA MAF Relocate CP's, Dejon FMIC,
Custom 3" DP, 3" Exhaust, GT3076R, Pioneer AVH-4100DVD, Hurst STS, ZZP triple pod, Autometer Cobalt boost/DPIC/WB gauges, Nitto NT05 245/40/18's, H&R Springs, 80:20 Meth Spray
Future - KSport Kontrol Pro Coilovers, 10% Tint, FMIC spray
538whp/501wtq @38 psi on meth and 93 oct on stock ish motor


06 EVO IX MR/SE - Sold
Mods - *Updated 10/6/13* AEM TRUboost EBC, 4in custom TBE, SD dual 93/e85 tune, ETS 4in Race Core FMIC, Dual Aeromotive 400lph Fuel Pumps, T4 Tubular Manifold w/ dual WG's, FP Super99HTZ DBB Turbo, GSC 274 mivec cams, ARP headstuds/rod studs, FIC 2150cc Injectors, Aeromotive FPR, Aeromotive Fuel Rail, catch can, Mini Battery Kit, Slim Coolant Fan, Kiggly Racing high pressure valve Springs/Titanium Retainers, Supertech Stainless Steel Valves, Dual VTA Tial 44mm WG's, 4g64 Stroker Manley Pistons, 155mm 2.4 LR Manley Turbo Plus I Beam Rods with ARP 625 Studs, 100mm forged non-billet Manley Crankshaft, Full H/E PNP with Port Matching, Kiggly Racing Girdle, Dual Tial 50mm BOV's, Excedy Triple Disc Carbon HD Clutch, AEM EMS

'95 Ram 2500 Diesel
Mods - 5in TBE, Boost Elbow set to 28psi, Adjusted fuel pump, Open Turbo.

Future Mods- Super Street Clutch (rated @1400ftlbs tq), 67mm turbo, 160lb valve springs, added timing, tubular exhaust manifold, larger injectors, possible 6 spd swap.


Master ASE Certified Gasoline/Diesel Technician since 2004

Speed Junkies Social Group

Yourcobalt Official Facebook Page!

Syndicate of Tuners Official Page! Up and going again as of 1/11/13

Click here to PM me if you have questions or issues!
Leveecius is offline  
post #7 of 7 (permalink) Old 01-09-2014, 03:51 PM
Super Moderator
 
swanman35's Avatar
 
Join Date: May 2013
Location: SWPA
Posts: 2,068
Yeah, my car drove 100% better after a full tune up.
Sent from AutoGuide.com Free App
swanman35 is offline  
Sponsored Links
Advertisement
 
Closed Thread

Tags
cai , engine , plugs , rich , spark plugs

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode 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

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

 
For the best viewing experience please update your browser to Google Chrome