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Old 08-18-2019, 01:34 AM   #22
Scooby Guru
Member#: 22412
Join Date: Aug 2002
Chapter/Region: SWIC
Location: Albuquerque, NM
2012 Legacy 2.5GT
Ice Silver Metallic


you need to get everything out of there - my concern would be how did this happen? there looks to be a decent amount of deformation of the plug - if this happened during install, then they were really overtorqued. Using an easy-out/bolt extractor might work, but you need to be really careful - if you damage the threads in the head, then you'll be in even worse shape.

Just curious, but where did you source the plugs? there are counterfeit NGK plugs out there which are known to be causing problems... the iridescent/non-uniform finish to the plating is one of the things that's been noted to be typical of counterfeits...

google "fake NGK" and you'll get lots of info
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DrD is offline   Reply With Quote