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03-11-2022, 07:08 PM
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#1 |
 Drives: 2018 ZL1 1LE, 1969 SS 396 Join Date: Jul 2017
Location: Atlanta
Posts: 35
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Misfires (LT4)
I am logging misfires on #2 cylinder. I swapped plug, lead, and coil with no improvement. Does anyone have any other suggestions?
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03-11-2022, 07:40 PM
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#2 | |
          
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,749
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Quote:
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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03-11-2022, 08:05 PM
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#3 | |
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Drives: 2018 ZL1 1LE, 1969 SS 396 Join Date: Jul 2017
Location: Atlanta
Posts: 35
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03-11-2022, 08:09 PM
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#4 |
Drives: 2017 ZL1 Join Date: Jan 2017
Location: NJ
Posts: 905
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Show a log, I troubleshot mine down to a bad injector.
I went down the troubleshooting path of: plug wire, coil, coil wiring, plug, valvetrain, and wound up being a bad injector. https://www.camaro6.com/forums/showthread.php?t=594556
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2017 Camaro ZL1 Coupe M6 (847whp Dynojet on 93)
Last edited by LiqTenExp; 03-11-2022 at 08:36 PM. |
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03-11-2022, 08:21 PM
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#5 | |
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Drives: 2018 ZL1 1LE, 1969 SS 396 Join Date: Jul 2017
Location: Atlanta
Posts: 35
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Quote:
I do have a log attached to an inquiry in HP Tuners. |
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03-11-2022, 08:38 PM
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#6 |
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Drives: 2017 ZL1 Join Date: Jan 2017
Location: NJ
Posts: 905
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I did not have any KR with my issue, mine was under a little load 2-4k rpm
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2017 Camaro ZL1 Coupe M6 (847whp Dynojet on 93)
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03-11-2022, 08:53 PM
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#7 | |
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Drives: 2018 ZL1 1LE, 1969 SS 396 Join Date: Jul 2017
Location: Atlanta
Posts: 35
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Quote:
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03-11-2022, 09:10 PM
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#8 | |
Drives: 2019 ZL1 Join Date: Mar 2019
Location: NJ
Posts: 1,534
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Quote:
Pull a few degrees of timing out of cylinder 2 in the static table, see what the results are.
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928rwhp - 93 | 1040rwhp/898rwrq - E65 SAE
LME 377 LT4 Short Block | Magnuson 2650 80mm upper w/13% lower (9.06) | DSX Lid & Valve Covers | CSP Custom Cam w/32% fuel lobe | CID Heads | NW 103mm TB | Roto Fab Big Gulp | CSP 2" Headers w/Green GESI Gen 2 Cats | Borla 3" Full Cat Back w/ S-Type| Mighty Mouse Wild Catch Can| Custom Holley Low side Fuel system| TooHigh PSI Port Injection w/Holley Controller | Forced Inductions Interchiller w/2 gallon fender tank | TK Performance built 10L90 |
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03-11-2022, 09:36 PM
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#9 | |
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Drives: 2018 ZL1 1LE, 1969 SS 396 Join Date: Jul 2017
Location: Atlanta
Posts: 35
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03-11-2022, 10:37 PM
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#10 | |
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Drives: 2019 ZL1 Join Date: Mar 2019
Location: NJ
Posts: 1,534
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Yes if its knocking on that cylinder pull a few degrees out and then log again. These engines sometimes need static adjustments per cylinder. Not saying that's the problem but see what the result is.
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928rwhp - 93 | 1040rwhp/898rwrq - E65 SAE
LME 377 LT4 Short Block | Magnuson 2650 80mm upper w/13% lower (9.06) | DSX Lid & Valve Covers | CSP Custom Cam w/32% fuel lobe | CID Heads | NW 103mm TB | Roto Fab Big Gulp | CSP 2" Headers w/Green GESI Gen 2 Cats | Borla 3" Full Cat Back w/ S-Type| Mighty Mouse Wild Catch Can| Custom Holley Low side Fuel system| TooHigh PSI Port Injection w/Holley Controller | Forced Inductions Interchiller w/2 gallon fender tank | TK Performance built 10L90 |
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03-12-2022, 10:56 AM
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#11 |
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Dyno Show Queen LOL
Drives: 16 SS & 17 ZL1 Both Yellow Join Date: Jan 2014
Location: Houston
Posts: 4,345
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9/10 its the injector unless something mechanical is wrong with that cylinder.
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 Kong Ported 2650, Crawford Racing Port Injection, Weapon X 112mm Adapter, NW112mm TB, Livernois Ported LT4 Heads, Lingenfelter GT32 stealth cam, Haltech Elite, and Carbon by Trufiber |
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03-12-2022, 03:35 PM
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#12 | |
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Drives: 2018 ZL1 1LE, 1969 SS 396 Join Date: Jul 2017
Location: Atlanta
Posts: 35
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Quote:
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