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      03-18-2017, 08:14 PM   #472
Leonardo629
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Taiwan
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Drives: 2013 M3 Coupe
Join Date: Sep 2006
Location: Taiwan

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Attacked the spark plugs job this afternoon, success! Do the passenger side first, since #4 will take the longest, and practice helps. Driver side took me 10 min from coil off to coil back on. Below I posted a pic of all the tools I used, not shown are 6mm/8mm sockets, and a torx bit to remove the airbox.

Some observations:

- M coil puller WILL NOT destroy the head of the coil, someone must've used a prying method to lift the coil out if this is not the first time your plugs are being changed (incompetent tech?).

- 21mm wrench and M coil puller will lift #4 and #8 coil outl like nothing, remember once you hook the wrench to the puller, DON'T lift from the end of the wrench (toward front of the car), use one hand as a pivot, and lift closest to the coil, or you risk damaging the little head on the coil.

- my torque wrench couldn't fit #4 and #8 plugs, so I just got a feel of the tightness of other cylinders, then tighten it down snugly.

- Pushing #4 coil back down will be a pita, be prepared.

- Mechanic gloves is a MUST.


Last edited by Leonardo629; 03-19-2017 at 12:58 AM..
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