Cylinder #3 Spark Plug Blow-Out
#21
I've had this issue as well after a track weekend. The car missfired last few laps so I pulled the coils to visually inspect the plugs as my A/F gauge indicated the fuel mixture was fine.
I found plug 3 was loose enough to be rattling around and the others were all hand removable.
I always use never seize and if you ever had a plug fused to your head so tight no amount of pb blaster will prevent it from removing threads when you finally get it out... You would too.
Though I've never had this issue with plugs coming loose on any other vehicle forced induction or NA and I've never tourqed my plugs until this car.
Lesson learnt, and I got off easy but, one more lap and I'd have had the same issue!
PSA: Torque your plugs and check them every oil change! I've not had the issue since
I found plug 3 was loose enough to be rattling around and the others were all hand removable.
I always use never seize and if you ever had a plug fused to your head so tight no amount of pb blaster will prevent it from removing threads when you finally get it out... You would too.
Though I've never had this issue with plugs coming loose on any other vehicle forced induction or NA and I've never tourqed my plugs until this car.
Lesson learnt, and I got off easy but, one more lap and I'd have had the same issue!
PSA: Torque your plugs and check them every oil change! I've not had the issue since
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