JUST CANT FIND THE MISSFIRE! - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

tillroot1 · 07-28-2013, 02:13 PM

I have posted here before on the tuning forums, I have a 2010 SS with the 6manual, and the 6.2 I have a full ARH exhaust including cats. a CAI and a Dyno tune from JDP Motorsports. some time back I would notice a slight misfire, and it seemed to be at between 1k and 2k rpms while surface street driving. It has steadily gotten worse, the dealership can only show a random misfire, and does not set off any lights on the dash. I have changed the plugs, wires and cleaned the mass airflow sensor. Has anybody else had this problem and been able to track the issue down? the car runs perfectly except this low rpm issue and it does it at a steady speed in any town driving. While the car idles with the parking brake applied, every once in a while I can see the tach dip and pick up but not at a consistant rate, unsure if it may be related but just a symptom. Thanks, Ron Tilley

The Stig · 07-28-2013, 02:22 PM

Vacuum leak?

TriGun · 07-28-2013, 02:44 PM

I had the same problem before. And it turns out to be the injectors as I guess. Because when I changed the injectors to ID850 the problem is gone. You may try some injectors cleaner additive.

tillroot1 · 08-01-2013, 10:03 PM

tri gun, can you tell me more about the injectors? I have tried the techron chevron cleaner, and just about out of ideas, Thanks, Ron

firestone_ss · 08-02-2013, 10:38 AM

have you tried driving the car with the scanner in the car and set to read the misfire moniter, if anything else it will show what cylinder is mis firing. After that you can zero in on the cause, a random misfire can be really tough to locate without live feed from the moniter.

tillroot1 · 08-02-2013, 06:31 PM

Quote:

Originally Posted by firestone_ss

have you tried driving the car with the scanner in the car and set to read the misfire moniter, if anything else it will show what cylinder is mis firing. After that you can zero in on the cause, a random misfire can be really tough to locate without live feed from the moniter.

would the dealership do that? they are the ones that told me that there was a random misfire. Its very irritating and I do not know what to do. Thanks, Ron Tilley

partymn · 08-03-2013, 02:55 PM

We are in the same boat on this one, just cant track it down. Luckily everything is fine and the light goes away, P0300 code, once I get above 2K. If I track it down I will be sure to let you know what I found.

firestone_ss · 08-03-2013, 11:59 PM

Quote:

Originally Posted by tillroot1

would the dealership do that? they are the ones that told me that there was a random misfire. Its very irritating and I do not know what to do. Thanks, Ron Tilley

its up to the tech and every tech does his/her diagnostic procedure differently,if you can by-pass the service advisor and talk to the tech who looked at it im sure you will get a better picture of whats going on, the techs name should be on your receipt, have faith good luck

07-28-2013, 02:13 PM	#1
tillroot1 Drives: 2010 Camaro SS Join Date: Mar 2010 Location: Powell Wy Posts: 64	JUST CANT FIND THE MISSFIRE! I have posted here before on the tuning forums, I have a 2010 SS with the 6manual, and the 6.2 I have a full ARH exhaust including cats. a CAI and a Dyno tune from JDP Motorsports. some time back I would notice a slight misfire, and it seemed to be at between 1k and 2k rpms while surface street driving. It has steadily gotten worse, the dealership can only show a random misfire, and does not set off any lights on the dash. I have changed the plugs, wires and cleaned the mass airflow sensor. Has anybody else had this problem and been able to track the issue down? the car runs perfectly except this low rpm issue and it does it at a steady speed in any town driving. While the car idles with the parking brake applied, every once in a while I can see the tach dip and pick up but not at a consistant rate, unsure if it may be related but just a symptom. Thanks, Ron Tilley

07-28-2013, 02:22 PM	#2
The Stig knows 2 facts about ducks Drives: ...and they're both wrong Join Date: Aug 2009 Location: The HMS Invincible Posts: 25,072 View My Garage	Vacuum leak? __________________

08-03-2013, 02:55 PM	#7
partymn Drives: 2014 1ss 1LE Join Date: Sep 2011 Location: Goose Creek, SC Posts: 878 View My Garage	We are in the same boat on this one, just cant track it down. Luckily everything is fine and the light goes away, P0300 code, once I get above 2K. If I track it down I will be sure to let you know what I found. __________________ 2014 1SS 1LE, bone stock for now.

07-28-2013, 02:44 PM	#3
TriGun Drives: Camaro 2SS/RS Ice Silver Join Date: Oct 2009 Location: Kuwait Posts: 205	I had the same problem before. And it turns out to be the injectors as I guess. Because when I changed the injectors to ID850 the problem is gone. You may try some injectors cleaner additive.

08-01-2013, 10:03 PM	#4
tillroot1 Drives: 2010 Camaro SS Join Date: Mar 2010 Location: Powell Wy Posts: 64	tri gun, can you tell me more about the injectors? I have tried the techron chevron cleaner, and just about out of ideas, Thanks, Ron

08-02-2013, 10:38 AM	#5
firestone_ss Drives: 2010 camaro ss Join Date: May 2009 Location: Tacoma WA Posts: 779	have you tried driving the car with the scanner in the car and set to read the misfire moniter, if anything else it will show what cylinder is mis firing. After that you can zero in on the cause, a random misfire can be really tough to locate without live feed from the moniter.