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04-02-2022, 09:37 AM
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#1 |
 Drives: ZLI 1LE; 992 S; GLE 450, Denali HD Join Date: Sep 2019
Location: Jacksonville Beach
Posts: 176
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One is not like the other
 Had a misfire during last track day. Felt like a fouled plug. Found this. How badly do you think I damaged the motor? Changes all plugs, feels fine. Any advise on next steps?  
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04-02-2022, 09:41 AM
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#2 |
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Former GM Technician
Drives: 2018 ZL1 A10, 06 Silverado Duramax Join Date: Sep 2009
Location: Switzerland
Posts: 402
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Oh no! That doesn't look good!
My next step would be borescope, and leakdown test.
__________________
2018 Camaro ZL1 A10
Rotofab Big Gulp, Nick Williams 103, Magnuson 2650, 9.17" (14%) lower, 90mm upper, Vengeance Racing Heads (LME) Cam Package (Cammotion Stage 1), Johnson Lifters, DSX dual intank pump, Lingenfelter high flow check valve, Motion Raceworks Flex Fuel adapter, LPE Big Bore Hpfp, XDI 30% Injectors, BBK shorty headers, Custom 2.75" down pipes, Gesi Gen2 high flow cats, MM catch can. 2006 Silverado Duramax Diesel MPI Compound Turbo 40% over Injectors Efi Live DSP5 Tuning Follow me on Instagram: SwissZL1 |
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04-02-2022, 09:53 AM
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#3 |
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Drives: 2022 Lt1 A10 Join Date: Nov 2015
Location: clark, mo
Posts: 8,882
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What cylinder did that come out of? Did it start missing real bad like it bent an exhaust valve?
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04-02-2022, 10:34 AM
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#4 |
         Drives: 2024 CT5-V Blackwing Join Date: Sep 2020
Location: GA
Posts: 3,556
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That's not good at all.
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04-02-2022, 10:58 AM
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#5 | |
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Drives: ZLI 1LE; 992 S; GLE 450, Denali HD Join Date: Sep 2019
Location: Jacksonville Beach
Posts: 176
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Quote:
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04-02-2022, 11:18 AM
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#6 | |
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Drives: 2024 CT5-V Blackwing Join Date: Sep 2020
Location: GA
Posts: 3,556
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Quote:
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04-02-2022, 11:46 AM
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#7 |
Drives: 2017 Camaro SS, 2011 Corvette GS Join Date: Feb 2019
Location: Erlanger, Kentucky 41018
Posts: 857
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Probably need to check your tune.
Not a bad idea to borescope that cylinder. But if the car is running fine, its likely okay. Now if the porcelain would have broken and bounced around in the cylinder, thatg would be bad. |
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04-02-2022, 12:39 PM
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#8 |
 
Drives: 19’ ZL1 A10 / 16’ C7Z M7 Join Date: Apr 2021
Location: Ft.Wayne, IN
Posts: 327
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That doesn’t mean that the motor is hurt. It may very well be fine. Just need to check things out.
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04-02-2022, 01:10 PM
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#9 |
 
Drives: 2017 zl1 Join Date: Apr 2021
Location: Arizona
Posts: 13
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Leak down test will reveal an issue. If you have bore scope check inside but leak down will tell you whats bad. Might have burned it off completly and nothing is in piston. Seen power adder cars burn them off stock at dealer.
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 KOOKS LONG TUBES AWE EXHAUST ROTOFAB FLEX FUEL 55% E TUNE PORTED THROTTLE BODY |
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04-02-2022, 11:02 PM
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#10 |
 Drives: 22 ZL1 1LE A10 Join Date: Feb 2022
Location: Ohio
Posts: 233
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so stock or not?
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04-03-2022, 04:57 AM
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#11 | |
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Drives: ZLI 1LE; 992 S; GLE 450, Denali HD Join Date: Sep 2019
Location: Jacksonville Beach
Posts: 176
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Quote:
Not stock, cam, headers, ported blower, and catless. I was using 100 octane with matching tune. Sent from my iPhone using Tapatalk |
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04-03-2022, 07:37 AM
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#12 | |
Drives: 2019 ZL1 Join Date: Mar 2019
Location: NJ
Posts: 1,537
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Quote:
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