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BiggE3415 · 03-14-2020, 01:28 PM

I need help tracking down a misfire. Its only on one cylinder under load. Happened after installing longtube headers and cai. I just got back from my tuner and we can't figure out what's the issue. So far I swapped plug wire and coil to another cylinder, ohm tested the injector and swapped the injector to another cylinder. The problem stayed on cylinder #4. The only things I can think of is a broke valve spring, pcm, or a wiring issue. To my knowledge my car has been unmolested before me. I'm about to do a cam swap but need to track down the problem before moving forward.

03-14-2020, 01:28 PM	#1
BiggE3415 Drives: 2011 Camaro SS Join Date: Aug 2018 Location: Travelers Rest Posts: 1	Need help with misfire after header install it's not the plugs or wires. I need help tracking down a misfire. Its only on one cylinder under load. Happened after installing longtube headers and cai. I just got back from my tuner and we can't figure out what's the issue. So far I swapped plug wire and coil to another cylinder, ohm tested the injector and swapped the injector to another cylinder. The problem stayed on cylinder #4. The only things I can think of is a broke valve spring, pcm, or a wiring issue. To my knowledge my car has been unmolested before me. I'm about to do a cam swap but need to track down the problem before moving forward.