Does anyone else experience spark plugs going bad once a year? I don't know if it is me doing something wrong or just something I should expect as normal.
Cyl 6 seems to go bad first every time. If I change the plugs it runs great for about a year.
Thanks,
-Batsy
Loaded my latest tune and log below for the curious. (I all ready fixed the IAT in this tune.)
20220825_TuneWhenTheWheelFellOff.hpt
Last edited by batsy74; 08-26-2022 at 03:08 PM.
WheelFallOff.hpl
This log didn't quite show the misfires because it does it more on the highway. I was driving home on slower roads when making this log and then the wheel hub failed on the drive.
-Batsy
Out of curiosity, what plugs & gap are you running? Headers?
2017 Camaro SS, Whipple 3.0, Mast LT Black Label heads, 112mm TB, LPE BB HPFP & LT4+52% injectors, Fore Innovations triple pumps
1059 WHP, 944 WTQ
When the plugs 'go bad', do they show signs of carbon tracking on the porcelain exterior?
2022 Cadillac CT5-V Blackwing (733 whp)
2022 Cadillac CT4-V Blackwing (716 whp), 10.750 @ 134.77 mph
2016 Cadillac ATS-Vs (eleven ATS-Vs in the 9s)
2008 Pontiac G8 (first G8 in the 10s), 10.727 @ 129.87 mph
2000 Bonneville SSEi (first 3800 Bonneville in the 10s), 10.711 @ 125.71 mph
1999 Grand Prix GT (first 3800 FWD in the 8s), 8.902 @ 154.90 mph
1998 Firebird (first 3800 RWD in the 8s), 843 whp, 8.991 @ 152.12 mph
1998 Grand Prix GTP (first 3800 FWD in the 10s), 9.499 @ 145.13 mph
8 New NGK IRIDIUM IX Spark Plug LZTR7AIX-13 # 5107 https://a.co/d/1hAMYMb
Gap them at .032
Stock exhaust manifolds.
I don't see any carbon tracking on the porcelain exterior.
Just to keep this thread complete for future seekers. The plugs all seem to be fine. After changing them I am still getting an intermittent misfire. Going to swap Coil from Cyl 6 to Cyl 2 and hope the issue follows the coil pack. I'm really hoping there is not a bent push rod or spun lifter.
Thanks for reading.
-Josh
New coils fixed the problem.
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