05-13-2021, 08:34 AM | #1 |
Drives: 2019 Chevrolet Camaro SS Join Date: Apr 2021
Location: 405
Posts: 146
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Bad Coils?
Alright, boosted (11 psi) , cammed, e85, lt4 high side and injectors, fore dual pump on the low side.
Car seems to run fine at idle, but at WOT it starts misfiring like nobody’s business. Breaking up, flashing CEL. The second i mat the pedal and it downshifts is when it starts. at least that what it seems like. might be a little after (like a second at the longest). I have colder plugs, smaller gap, taylor wires. only thing else i could think of would be tune or ignition coils. i do have the msd 2-step as well. how do i test coils? what do you think it is? anyone ever dealt with this issue? |
05-13-2021, 08:54 AM | #2 |
Drives: 2016 Camaro SS Join Date: Sep 2018
Location: Bartlett, TN
Posts: 1,121
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If you are on full E85 you might be running out of fuel. Can you drop the boost a few pounds and see if it still does it?
Might want to post this in the Forced Induction section. |
05-13-2021, 10:34 AM | #3 |
Drives: 2017 2SS, 50th pkg, M6, MRC, NPP Join Date: Jan 2016
Location: Ocean City, NJ
Posts: 3,178
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05-13-2021, 10:44 AM | #4 |
Thank you Al Oppenheiser!
Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017
Location: Sarasota, FL
Posts: 4,975
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Is it rich or lean at WOT.
That will narrow down where the problem is. |
05-13-2021, 11:15 AM | #5 |
Drives: Hyper Blue 2016 2SS 6M Join Date: Sep 2017
Location: North Ga
Posts: 1,787
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What's your high side pressure at WOT. My car missed and threw multiple codes when my hpfp went out. High side was around 2000psi and the curve was wery jagged looking, sort of like a compressed ekg. Normal is 2800 - 2900 with a nice, smooth curve
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Baby Blue
2016 Hyper Blue 2SS/6m/MRC/NPP/Silver Rally stripes/ZL1 wheels & brakes/GForce DS and axles/ZLE Cradle Bushings/FE4 ARB front & rear/SEMA Grill/Rotofab dry/95mm TB/Magnuson 2300/Full LT4 fuel system/JMS boost-a-pump/E85 Sensor/Ported CID heads from LME/Cammotion PD cam/Thompson Motorsports forged shortblock/catted Kooks 1 7/8 headers /JRE remote tuned |
05-13-2021, 12:36 PM | #6 |
Drives: 2019 Chevrolet Camaro SS Join Date: Apr 2021
Location: 405
Posts: 146
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it is extremely rich at idle, which is an issue that will have to be worked out with the tuner. as far as WOT, i’m not sure. I don’t log nor have a wideband gauge so here soon i’ll be getting hp tuners and a wideband so i can log, but next week i’m seeing the tuner so we can log what exactly is going on. luckily i don’t drive the car hard often, do to traction issues and the roads here in oklahoma.
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05-13-2021, 12:38 PM | #7 | |
Drives: 2019 Chevrolet Camaro SS Join Date: Apr 2021
Location: 405
Posts: 146
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Quote:
I’ll be getting Hp tuners soon so i can log. but next week i’m seeing the tuner to log, since i don’t drive that much it’s not a timely matter |
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05-13-2021, 12:40 PM | #8 |
Drives: 2019 Chevrolet Camaro SS Join Date: Apr 2021
Location: 405
Posts: 146
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it does have a tps code, but as far as i know, it’s just a permanent code that was thrown in the past and is just always going to show up. at least that’s what i was told by a previous tuner
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05-13-2021, 01:23 PM | #9 | |
Drives: 2019 Chevrolet Camaro SS Join Date: Apr 2021
Location: 405
Posts: 146
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Quote:
and thank you, i’ll post it there too |
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05-13-2021, 01:31 PM | #10 |
Drives: 17 SS a8 Join Date: Feb 2010
Location: omaha
Posts: 1,678
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Number one stop flooring it.
Almost for sure a fuel/tuning issue. You need a log with a wideband. Need to look at a/f, pw, fuel pressures...
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dropped a valve in the 6.2. now running a drop in rods and piston 5.3
best et 5.83@121 with the 5.3 http://www.camaro6.com/forums/showthread.php?t=465472 |
05-13-2021, 01:35 PM | #11 |
Drives: 2017 2SS, 50th pkg, M6, MRC, NPP Join Date: Jan 2016
Location: Ocean City, NJ
Posts: 3,178
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05-13-2021, 07:12 PM | #12 |
Drives: 2019 Chevrolet Camaro SS Join Date: Apr 2021
Location: 405
Posts: 146
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05-13-2021, 07:13 PM | #13 |
Drives: 2019 Chevrolet Camaro SS Join Date: Apr 2021
Location: 405
Posts: 146
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no sir, but the code reader live logs misfires, but doesn’t throw codes so i have no idea where it’s coming from. but it logged misfires way back before i was even cammed. just 6 psi boost in a procharger. and i changed my plugs multiple times, at many different gaps
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04-01-2022, 03:26 PM | #14 | |
Drives: Fireball 700 Join Date: May 2017
Location: TX
Posts: 21
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Quote:
What did you end up doing? |
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Tags |
advice or opinions, help please, misfire, problems, tuning |
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