Misfiring in Cylinders 1,3,5,7

willgresham34 · 10-26-2023, 11:04 PM

Hello All, I have had some weird engine activity with my car bogging and misfiring at idle. It’s quite odd the car will bog pretty hard for a second then it will fix it’s self for ab a min before coming back. It also misfired on me a few times on the interstate the other day. I took it to a Tech that I know (not a gm tech anymore atleast used to work there along time ago but still enjoys working on camaros) and he ran my codes and we found that cycljnders 1 3 5 7 are all misfiring. He looked around quite a bit but he could not find anything. He said maybe a leak somewhere or an electrical issue of some sorts. We didn’t have more time to go in-depth but I will say i’m having a problem with some bcm fuses blowing and i’m trying to figure out if this misfiring could be related to the bcm issue or is another problem on its own. My tech also suggested that it could just need a tune to fix it but he finds it’s weird that only one side is doing it.

cjperformance · 10-27-2023, 07:00 AM

Any mods?

willgresham34 · 10-27-2023, 10:20 AM

Car has cold air intake and headers that were done about 2 months before the problem started.

dfwcowboy · 10-27-2023, 11:47 AM

First thing I'd check are for fouled plugs. While not that likely it's the cause, it's easy enough to investigate.

SnakeEyeSS · 10-27-2023, 12:10 PM

Entire cylinder bank? Obviously something on one side of the engine has gone wrong. Check All the wiring from the harness to the coils?

MT-SS1LE · 10-27-2023, 01:57 PM

Heat from the headers has melted plug and/or other wires? Would not be the first time its happened on these cars.

SSDan · 10-27-2023, 04:07 PM

Quote:

Originally Posted by MT-SS1LE

Heat from the headers has melted plug and/or other wires? Would not be the first time its happened on these cars.

This. Many of those with headers have had weird electrical problems caused by melted wiiring. The problem area is on the passenger side where the header tubes are close to a wiring bundle.

ctrlz · 10-30-2023, 07:59 AM

Quote:

Originally Posted by MT-SS1LE

Heat from the headers has melted plug and/or other wires? Would not be the first time its happened on these cars.

Agree with all above.
There are probably 20 threads on this exact issue. The electrical gremlins vary, but the cause is the same.

10-26-2023, 11:04 PM	#1
willgresham34 Drives: 2016 Chevy Camaro 1SS Join Date: Sep 2023 Location: Athens, GA Posts: 19	Misfiring in Cylinders 1,3,5,7 Hello All, I have had some weird engine activity with my car bogging and misfiring at idle. It’s quite odd the car will bog pretty hard for a second then it will fix it’s self for ab a min before coming back. It also misfired on me a few times on the interstate the other day. I took it to a Tech that I know (not a gm tech anymore atleast used to work there along time ago but still enjoys working on camaros) and he ran my codes and we found that cycljnders 1 3 5 7 are all misfiring. He looked around quite a bit but he could not find anything. He said maybe a leak somewhere or an electrical issue of some sorts. We didn’t have more time to go in-depth but I will say i’m having a problem with some bcm fuses blowing and i’m trying to figure out if this misfiring could be related to the bcm issue or is another problem on its own. My tech also suggested that it could just need a tune to fix it but he finds it’s weird that only one side is doing it.

10-27-2023, 07:00 AM	#2
cjperformance Drives: 2017 Camaro SS 50th Anniversary Join Date: Apr 2021 Location: Missouri Posts: 929	Any mods? __________________ 2017 50th Anniversary Edition \| P1X Stage 2 DSX Aux Low Side \| LT4 high side \| Flex Fuel TooHighPsi Port Injection (installed & tuning) CircleD 3K Stall \| QA1 CF Driveshaft Forgestar F14 Drag 17x10 NT555R2 305/45/17 Rear Forgestar F14 18x8 NT555G2 235/50/18 Front 10.84@131 w/4.13" pulley ??.??@??? w/3.7" pulley (installed & tuning)

10-27-2023, 12:10 PM	#5
SnakeEyeSS Drives: Camaro 2SS & ZL1 Join Date: Mar 2018 Location: Oklahoma Posts: 857	Entire cylinder bank? Obviously something on one side of the engine has gone wrong. Check All the wiring from the harness to the coils? __________________ 2017 Camaro 2SS A8 Bright Yellow NPP MRC 2023 Camaro ZL1 A10 Radiant Red

10-27-2023, 01:57 PM	#6
MT-SS1LE Drives: 2023 SS 1LE Sharkskin Join Date: Jun 2023 Location: MAGA MT Posts: 282	Heat from the headers has melted plug and/or other wires? Would not be the first time its happened on these cars. __________________ ΜΟΛΩΝ ΛΑΒΕ

10-27-2023, 10:20 AM	#3
willgresham34 Drives: 2016 Chevy Camaro 1SS Join Date: Sep 2023 Location: Athens, GA Posts: 19	Car has cold air intake and headers that were done about 2 months before the problem started.

10-27-2023, 11:47 AM	#4
dfwcowboy Drives: 2024 ZL1 M6, 1969 Cessna Skylane Join Date: Jun 2018 Location: Dallas Posts: 368	First thing I'd check are for fouled plugs. While not that likely it's the cause, it's easy enough to investigate.

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