CEL: Random Misfire, Misfire Cyl 2 & 6 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

BowtieBelle · 12-31-2013, 10:41 AM

Car is running fine. No indications of power loss or problems besides this CEL. Should I swap coilpacks with 1 and 4 and see if it's a coilpack issue? Anyone else had this happen in cold weather? Suggestions?

Thanks all!!

Evil-Bee-NH · 12-31-2013, 11:38 AM

happened to me last month. probably the winter fuel blend changeover try running dry gas and injector cleaner through a full tank mine turned off it was likely to much moisture in the fuel line.

Merc · 12-31-2013, 12:37 PM

Check plugs and wires, I actually had a plug back it self out.

Nutbutt · 12-31-2013, 02:45 PM

There is a GM TSB out on misfires. It recommends a induction cleaning. Can go the GM cleaner route or a good seafoam treatment.
Probably the cheapest way to start. I'll see if I can find the TSB.

BowtieBelle · 12-31-2013, 03:52 PM

Quote:

Originally Posted by Nutbutt

There is a GM TSB out on misfires. It recommends a induction cleaning. Can go the GM cleaner route or a good seafoam treatment.
Probably the cheapest way to start. I'll see if I can find the TSB.

I just dumped some of this in a tank full of No-E. See if it fixes the problem.

Mark114 · 12-31-2013, 05:44 PM

Your mods don't list a catch can. If you go the route of the induction cleaning and don't have a catch can then I would encourage you to get one. I have been surprised how much oil collects in my Elite catch can.

Good luck solving the problem!

TooCool5 · 01-01-2014, 07:57 PM

Quote:

Originally Posted by Evil-Bee-NH

happened to me last month. probably the winter fuel blend changeover try running dry gas and injector cleaner through a full tank mine turned off it was likely to much moisture in the fuel line.

^^^This^^^ Had the same cold weather problem.

BowtieBelle · 01-04-2014, 08:18 PM

Ran a tank of mid grade No-E with B12 Chemtool fuel treatment through it. Doing it one more time to be safe. Light has not returned. Fuel mileage has improved. Hoping we may have found the problem. Thanks guys!

TooCool5 · 01-08-2014, 01:54 PM

Quote:

Originally Posted by BowtieBelle

Ran a tank of mid grade No-E with B12 Chemtool fuel treatment through it. Doing it one more time to be safe. Light has not returned. Fuel mileage has improved. Hoping we may have found the problem. Thanks guys!

I run it every winter now, as my car sits most of the time waiting for dry,
Happy days to take her out.

Evil-Bee-NH · 01-08-2014, 01:58 PM

Quote:

Originally Posted by TooCool5

I run it every winter now, as my car sits most of the time waiting for dry,
Happy days to take her out.

Your poor car isn't getting enough loving if it's sitting there waiting to go out all winter. Mine loves the snow just not the ice.

PieNsky · 01-08-2014, 07:33 PM

The fuel doesn't pass over the intake valves. I sprayed a Chrysler top intake cleaner in mine and it did a fairly good job when I removed the intake, albeit, it didn't get the rear cylinders 5 and 6. Those could be cleaned by the vacuum line from the write up on here.

BowtieBelle · 01-10-2014, 06:05 PM

It seems that was the problem! No CELs since I ran the fuel treatment and I've put about 800 miles on the car.

Nutbutt · 01-10-2014, 07:49 PM

12-31-2013, 10:41 AM	#1
BowtieBelle They see me trollin'... Drives: 217 ci of fury; Chauffeured by SS Join Date: Jul 2011 Location: Oklahoma Posts: 13,876 View My Garage	CEL: Random Misfire, Misfire Cyl 2 & 6 Car is running fine. No indications of power loss or problems besides this CEL. Should I swap coilpacks with 1 and 4 and see if it's a coilpack issue? Anyone else had this happen in cold weather? Suggestions? Thanks all!! __________________ "Never race anything you can't afford to light on fire and push off a cliff." -CamaroSpike 2011 Custom LT/RS: Bella's Build Thread

12-31-2013, 11:38 AM	#2
Evil-Bee-NH 603 Camaros Drives: 2017 NGM I4 1LT Coupe Join Date: May 2012 Location: Manchester, NH Posts: 6,779 View My Garage	happened to me last month. probably the winter fuel blend changeover try running dry gas and injector cleaner through a full tank mine turned off it was likely to much moisture in the fuel line. __________________ MY 2017 I4 CAMARO BUILD JOURNAL \| YOUTUBE \| INSTAGRAM \| 316RWHP - 385 RWTQ HPTUNERS DYNO TUNE \| 12.693s @ 105MPH 1/4 Mile

12-31-2013, 12:37 PM	#3
Merc In The Circle Drives: 2010 Camaro 2SSRS IOM M6 Join Date: May 2009 Location: Abbotsford BC Canada Posts: 11,291	Check plugs and wires, I actually had a plug back it self out. __________________ My Build Thread

12-31-2013, 02:45 PM	#4
Nutbutt Drives: 2011 RJT 2LT/RS Convertible Join Date: Nov 2009 Location: Western Massachusetts Posts: 3,381 View My Garage	There is a GM TSB out on misfires. It recommends a induction cleaning. Can go the GM cleaner route or a good seafoam treatment. Probably the cheapest way to start. I'll see if I can find the TSB. __________________ 1st IPF Supercharged 2011 2LT/RS RJT Convertible

01-04-2014, 08:18 PM	#8
BowtieBelle They see me trollin'... Drives: 217 ci of fury; Chauffeured by SS Join Date: Jul 2011 Location: Oklahoma Posts: 13,876 View My Garage	Ran a tank of mid grade No-E with B12 Chemtool fuel treatment through it. Doing it one more time to be safe. Light has not returned. Fuel mileage has improved. Hoping we may have found the problem. Thanks guys! __________________ "Never race anything you can't afford to light on fire and push off a cliff." -CamaroSpike 2011 Custom LT/RS: Bella's Build Thread

12-31-2013, 05:44 PM	#6
Mark114 Drives: 2016 2SS Convertible Join Date: May 2012 Location: St. Louis, MO Posts: 1,710 View My Garage	Your mods don't list a catch can. If you go the route of the induction cleaning and don't have a catch can then I would encourage you to get one. I have been surprised how much oil collects in my Elite catch can. Good luck solving the problem!

01-08-2014, 07:33 PM	#11
PieNsky Drives: Victory Red 1LS Join Date: Nov 2008 Location: Louisville,KY Posts: 1,929 View My Garage	The fuel doesn't pass over the intake valves. I sprayed a Chrysler top intake cleaner in mine and it did a fairly good job when I removed the intake, albeit, it didn't get the rear cylinders 5 and 6. Those could be cleaned by the vacuum line from the write up on here.

01-10-2014, 06:05 PM	#12
BowtieBelle They see me trollin'... Drives: 217 ci of fury; Chauffeured by SS Join Date: Jul 2011 Location: Oklahoma Posts: 13,876 View My Garage	It seems that was the problem! No CELs since I ran the fuel treatment and I've put about 800 miles on the car. __________________ "Never race anything you can't afford to light on fire and push off a cliff." -CamaroSpike 2011 Custom LT/RS: Bella's Build Thread

01-10-2014, 07:49 PM	#13
Nutbutt Drives: 2011 RJT 2LT/RS Convertible Join Date: Nov 2009 Location: Western Massachusetts Posts: 3,381 View My Garage	__________________ 1st IPF Supercharged 2011 2LT/RS RJT Convertible