For those who have installed ngk 2309 plugs
Thread Starter
MBWorld Fanatic!
Joined: Mar 2011
Posts: 1,315
Likes: 4
E55, SL63, ML550
For those who have installed ngk 2309 plugs
I got my plugs on and checking the gap with feeler gauge reads .027 which is like .068 mm. Spec is .08mm.
I thought they should be correct out of the box as I have read older posts.
What gives. Also regapping on these plugs can damage them, right? Did you guys run them as is?
I thought they should be correct out of the box as I have read older posts.
What gives. Also regapping on these plugs can damage them, right? Did you guys run them as is?
Super Member
Joined: Nov 2012
Posts: 698
Likes: 16
From: Germany
C215 CL55 AMG, W124 500E, W210 E430, W124 300E
Regap plugs is something totally unknown in europe, so if those plugs are meant to be used in the M113 engines, i would just leave the gap the way they came out of the box.
MBWorld Fanatic!
Joined: May 2007
Posts: 6,403
Likes: 140
From: Clearwater Beach, Florida
2016 Cls63s AMG
