Misfire - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

BAH2SS · 11-12-2018, 10:21 PM

So I have a P0171 code showing along with P0174 (sometimes) and i know this is not a vacuum leak it's tune related. But I also got a P0300 code once and been reading live data with my scanner and noticed all cylinders are counting misfires randomly on Idle only. Maximum misifre count was 16 and back to 0 and the rest were averaged between 2-8 misfire counts and then back to 0 and not all of them on the same times. Is this caused by the lean afr or is it related to the ignition system. The misfire counts only at idle and sometimes when i engine brake.

Currently on the car 41-110 plugs with MSD wires which I really don't like. If the wires are causing this than I have a good reason to change the wires. Bought the car as is with the plugs and wires.

Pro-tuned · 11-13-2018, 04:07 AM

I would check engine grounds.

BAH2SS · 11-13-2018, 04:10 AM

Quote:

Originally Posted by Pro-tuned

I would check engine grounds.

How many grounds i have and where are they.

Pro-tuned · 11-20-2018, 11:24 AM

Do a search someone did good pics on the locations. A WB and checking STFT should help but consider “Lambda” when going for a WB.

christianchevell · 11-21-2018, 08:44 AM

https://www.granatellimotorsports.co..._Products.html

I researched out and bought wires from these guys I am very happy with and have no impedance, I would suggest you may also have cracked plugs if not installed correctly. There are tests on utube of granatelli wires versus the competition on a MSD tester showing they are the bees knees.... I would suggest stock iridium plugs, or if headers like me/cammed I use NGK tr6ix ...and never attempt to gap a iridium plug its brittle wire not a gap you can change.

Most people have no trouble with just plain stock wires and plugs...… and check for loose things like the MAF, TB, wiring connectors etc......

11-12-2018, 10:21 PM	#1
BAH2SS Stigs Bahraini Cousin Drives: 2015 Camaro 2SS 1LE Join Date: Oct 2018 Location: Bahrain Posts: 222 View My Garage	Misfire So I have a P0171 code showing along with P0174 (sometimes) and i know this is not a vacuum leak it's tune related. But I also got a P0300 code once and been reading live data with my scanner and noticed all cylinders are counting misfires randomly on Idle only. Maximum misifre count was 16 and back to 0 and the rest were averaged between 2-8 misfire counts and then back to 0 and not all of them on the same times. Is this caused by the lean afr or is it related to the ignition system. The misfire counts only at idle and sometimes when i engine brake. Currently on the car 41-110 plugs with MSD wires which I really don't like. If the wires are causing this than I have a good reason to change the wires. Bought the car as is with the plugs and wires. __________________ 2015 CAMARO 1LE

11-13-2018, 04:07 AM	#2
Pro-tuned Angewendet Ingenieur Drives: 14 Camaro ZL1 Join Date: Apr 2015 Location: USA Posts: 401	I would check engine grounds. __________________ ———— LQ9, Iron Block, Forged internals, 408CI, Jannetty custom cam, TS short block, Whipple, Hardened Jackshaft, PRC 260, 2X3 Dynatech Full Competition, HF Cats, CAI, NW 103, Chee, ID 1300, COPO Breather, MSD, Fore Dual Pump, ultratorque, E85, dual Meth, True Trac, 3:45, 1500hp axle-shafts, DSS CF, BMR, custom Pearl/Candy paint by Jaidah.

11-20-2018, 11:24 AM	#4
Pro-tuned Angewendet Ingenieur Drives: 14 Camaro ZL1 Join Date: Apr 2015 Location: USA Posts: 401	Do a search someone did good pics on the locations. A WB and checking STFT should help but consider “Lambda” when going for a WB. __________________ ———— LQ9, Iron Block, Forged internals, 408CI, Jannetty custom cam, TS short block, Whipple, Hardened Jackshaft, PRC 260, 2X3 Dynatech Full Competition, HF Cats, CAI, NW 103, Chee, ID 1300, COPO Breather, MSD, Fore Dual Pump, ultratorque, E85, dual Meth, True Trac, 3:45, 1500hp axle-shafts, DSS CF, BMR, custom Pearl/Candy paint by Jaidah.

11-21-2018, 08:44 AM	#5
christianchevell old school chevy rodder Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012 Location: Oregon Posts: 5,588 View My Garage	https://www.granatellimotorsports.co..._Products.html I researched out and bought wires from these guys I am very happy with and have no impedance, I would suggest you may also have cracked plugs if not installed correctly. There are tests on utube of granatelli wires versus the competition on a MSD tester showing they are the bees knees.... I would suggest stock iridium plugs, or if headers like me/cammed I use NGK tr6ix ...and never attempt to gap a iridium plug its brittle wire not a gap you can change. Most people have no trouble with just plain stock wires and plugs...… and check for loose things like the MAF, TB, wiring connectors etc...... __________________ 2021 Wild Cherry ZL1 A10, Sunroof, Data, Carbon, Nav, RotoFab Dry CAI, Elite x2, Borla ATK, Driveshaft shop