Missfiring V6 out of nowhere - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

UnbecomingTV · 03-07-2023, 12:08 PM

Hey guys,
My Camaro V6 (118.000Km) started missfiring out of nowhere. First on Piston 1 with the Code P0301 and after waiting 30min and deleting the code. Everything went fine for 15km. And then it started missfiring on Piston 4 with the code P0304. Both times the cel went on. but on the second time it solved itself.

Do you guys have an idea why, could the bad weather have an affect? Drove thru an pretty heavy snow storm

Thanks

KillboyPowerhead · 03-07-2023, 12:50 PM

Changed the timing chain ever? If not, maybe pop off the valve covers and check the timing chain, could be loose (pull on the chain where it's accessible between the camshafts, should be taut). Another issue I've seen on a few LLTs is the reluctor wheel slipping a bit on the crankshaft and throwing off timing. Lack of fuel or spark can also create a misfire event.

ElderJ · 03-09-2023, 08:47 AM

Could be one (or a combination) of many reasons for misfires. I always start with the coils and plugs. Swapping coils to see if the code follows the coil, then checking the plugs for any wear indication. After that, it turns into a seek-and-find.

I also may run some gas cleaner if I suspect that the issue may be bad gas.

03-07-2023, 12:08 PM	#1
UnbecomingTV Drives: Camaro Gen5 2009 Join Date: Jul 2022 Location: Germany Posts: 16 View My Garage	Missfiring V6 out of nowhere Hey guys, My Camaro V6 (118.000Km) started missfiring out of nowhere. First on Piston 1 with the Code P0301 and after waiting 30min and deleting the code. Everything went fine for 15km. And then it started missfiring on Piston 4 with the code P0304. Both times the cel went on. but on the second time it solved itself. Do you guys have an idea why, could the bad weather have an affect? Drove thru an pretty heavy snow storm Thanks

03-07-2023, 12:50 PM	#2
KillboyPowerhead Drives: 2015 Z/22 Join Date: Aug 2015 Location: Ontario, Canada Posts: 944	Changed the timing chain ever? If not, maybe pop off the valve covers and check the timing chain, could be loose (pull on the chain where it's accessible between the camshafts, should be taut). Another issue I've seen on a few LLTs is the reluctor wheel slipping a bit on the crankshaft and throwing off timing. Lack of fuel or spark can also create a misfire event. __________________ Overkill/Self Tuned; Mace Camshafts; K&N Typhoon Cold Air Intake; Ported 80mm Throttle Body/Intake Manifolds/Manifold Spacer; Solo Performance High-Flow Cats, Cat-back Exhaust; Vitesse Motorsports Throttle Controller; Elite Engineering E2 Catch Can; BC Racing BR Coilovers; JPSS Delrin Radius Rod Bushing Inserts, Sway Bars; Pegasus Aluminum Rear Cradle Bushings, Camber/Caster Plates; Z/28 Toe Links, Trailing Arms, Upper Control Arm Bushings, Rear Shock Mounts

03-09-2023, 08:47 AM	#3
ElderJ Drives: 2014 Camaro 1LT Join Date: Aug 2019 Location: Central Florida Posts: 372	Could be one (or a combination) of many reasons for misfires. I always start with the coils and plugs. Swapping coils to see if the code follows the coil, then checking the plugs for any wear indication. After that, it turns into a seek-and-find. I also may run some gas cleaner if I suspect that the issue may be bad gas.