yotagirl

I think I have a ring problem. I'm just under 19k on my 14 Scion tC. I'm not burning oil but I'm on my 3rd set of spark plugs. 1st was Denso Iridium (switched to NGK at 6k) and 2nd sets were NGK Iridium.
How can 3 sets of 100k mile spark plugs be bad already? I am Googling if any other tC2s have this issue. I did buy the extended warranty and Toyota has done all my service. I just bought it new off the lot Dec. 31st 2015, had 60 mi on it.

Has anyone else having this problem?


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drizzoh

Can't say I've heard of that before with the 2AR. Definitely something I'd have checked at the dealer while you still have some grace left on that warranty. Any pics of your plugs? Why are you replacing them so soon? Are you properly gapping them before installing new ones? Also why would you have not taken it to the dealer at 6k when you think you needed plugs... That is way too early. Even at the 100k recommended interval these should still look pretty much perfect.