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958 spark plugs and coils replacement

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Old 12-18-2015, 04:26 PM
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jay958
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Default 958 spark plugs and coils replacement

Removed all 8 of them but the ones near the firewall, number 4 and number 8 are PITA to remove, make sure you have several swivel connector and extensions or prepare to remove the cluster of pipes, I worked creatively to get my fingers behind and bended some plastic clips but be careful with those.
The only concern was careful with cross threading the spark plugs, I put several drops of dielectric grease on the thread both bottom and upper ceramic part and once dropped them in the holes I hand tightened them half way then un tighten 1/4 round to make sure the grease worked its way into the hole and feel the smoothness before tighten all the way.
The old plugs were kinda dirty looked burnt but being plugs that's how they are supposed to look like make sure the tip is kinda grey tanned, the threads would almost always smoked not too worried about that.
I am not sure how to post multiple images I am gonna repost 1 by 1
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Old 12-18-2015, 04:54 PM
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Default Passenger side or you call it right side

This side takes the most time, the torque strut mount is one, the one close to the firewall needs bending some plastic clusters
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Old 12-18-2015, 04:57 PM
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Default You need the good swivel connectors

Test the plastic clips and pipes and see which ones you can bend, be creative
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Old 12-18-2015, 05:02 PM
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Default This little guy bedded on my coil

Removed it and made my car run better
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Old 12-18-2015, 05:08 PM
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Default Make sure you seat the plugs really well

Watch the plugs be in the center of the holes, turn and unturn multiple times to make sure threads are smooth
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Old 12-19-2015, 10:30 AM
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BlazinPond
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Good work. I did mine about 6 weeks ago (958 CTT) and had similar observations as you.
Fairly easy DIY. I documented similar to you, but my pics turned out quite dark.
I'm still looking for torque specs.
Old 12-19-2015, 03:25 PM
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Originally Posted by BlazinPond
Good work. I did mine about 6 weeks ago (958 CTT) and had similar observations as you. Fairly easy DIY. I documented similar to you, but my pics turned out quite dark. I'm still looking for torque specs.
do you know the part number for the torque strut mount bolts?

i have the workshop lights shooting right at the hood, i just cant work well without good lightings.
torque for spark plugs were 21 lb ft as specified on the bosch boxes, alldata diy manual says 22lb ft, i went with 21 as i had bad experience with over torquing and heard horror stories for broken plugs in cylinders.

as far as the screws that secure the coils i just hand tighten them i did manage to still break one so any one reading this please be careful with these fragile little things.



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