One would think. However, I requested that all 6 plugs get replaced so I’m afraid warranty would only cover the cracked one and not the others getting replaced for “troubleshooting”.
That's probably true: my cracked plug was replaced without costing me anything. But the original sparkplugs replacement in late September last year was a normal recommendation, i.e., normal wear and tear (like brakes), and the warranty does not cover that. The Number Six cylinder replacement plug started going bad c. two weeks later: I drove on it for 4K miles, got an oil change and a new plug (plug covered under warranty because it failed): two weeks later the new plug started to go bad, and at the end of March, same thing: replaced the cracked plug, and this time the boot/coil too, under warranty.
Yeah, unfortunately my dealership isn’t willing to replace the coil or boot since it was previously replaced 3x. I challenged this, explaining the concern for coil corruption after exposure to a bad plug but no dice. So they are just going to replace all 6 plugs and see what happens. I just hope I don’t end up back there in a week with the same problem.
Car has 31K currently.
Well at least it’s under warranty no matter what they do
True. But I really don’t want them to only replace the one bad plug as I’m concerned I’ll end up back there in a few days with more problems requiring even more service time. In hopes of quickly solving the issue and identifying any other bad coils/plugs, I’m having them replace all 6 plugs which will be on my dime. I asked that the dealership that I bought it from cover this cost but shockingly haven’t heard back. Makes me question their integrity as the vehicle was listed as certified and yet the interval oil change sticker was never updated and when I brought it in for the oil change at my local dealership right after purchasing, it was also due for brake fluid swap, which I’m guessing should have been done as well.
