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      11-04-2012, 07:48 PM   #1
Eric335's Avatar

Drives: 2007 E92 SG 335i 6MT
Join Date: Apr 2011
Location: SW Florida

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2007 BMW 335i  [3.83]
Replacing Spark Plugs

I ordered myself a set of spark plugs and the spark-plug removal socket from

Ive never replaced spark plugs myself before, so im not entirely sure what to do. If you could list some specific things that i will need to do, or videos/DIYs on how to change plugs, i would appreciate it. I tried to search the forum, but to no avail (other than on a 330i, and it wasnt very in-depth).

Some general questions:
1) How do i set the 'gap'? I heard its 0.04 for my Bosch plugs, but im not sure how i will set this?
2)Do i need to use lube for next time i replace them?
3)What tools will i need other than the 12 pt socket? Link: N52/N54 Spark Plug Tool
4)Videos/threads on what to do?

Any info you can give will be appreciated! I am changing the plugs as a step to stop my misfires/long-cranks/rough idle. Next will be checking the coilpacks, and eventually intake valves if the plugs/coils dont fix it. Ill also re-flash the Procede to make sure thats not the issue. Ill post up another thread with the codes i get sometime this week (busy tonight/tomorrow).