Not trying to say the LNE plugs don't fail... BUT could your torque wrench be out? Too many people leave the torque set at whatever they last used instead of turning it back to minimum and releasing the spring... after a while the specs are way out to lunch... and the torque wrench is junk. Just saying it might be possible....
:-)
H
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Previously owned:
2000 Boxster S 3.2 Ocean Blue / 1974 911 Targa Silver
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