Changing Spark Plugs on an E46 330i
This isn't quite the way I did it, but when I got done doing it, I figured this way would have been easier.
Getting access to all 6 plugs...
The plugs are all under the passenger side of the engine, so we need to gain access to them.
We're going to first have to remove the cabin air filter box to have access to the last two plugs with ease.
First of all, open the three little tabs by twisting them
Remove the cover and tuck away the weather strip that's running form one side of the engine to the other so that it’s out of the way...
Remove the cabin air filter. You might want to use this chance to clean up the air box of any debris, and maybe even replace the filter if needed :dunno.
Now, to remove the box it's self, simply unscrew the four star shaped screws... Then tap of the power cable from the front of the air box, and set it aside for now.
Ok, now that you have all the room to work with that you'll need, let's get to the plugs.
Since the all passenger side of the engine needs to be accessed, you'll have to remove the cover for that portion. Note.... I did find it easier if you loosen the first bolt on the driver side cover... And they are 10mm
And don't forget the screw in the back (yes I know, I still have the air box on this picture - told ya I did it the long way first :doh - )
Once the cover is removed you'll see all six ignition coils. I did them one at a time, you’re more than welcome to do as you please here ;)
But yeah each coil is held in place by it's harness and two 10mm bolts. Unplug them and unscrew the bolts :D
Now that we have the coils out of the way, time to get the old plugs out. Use a spark plug tool to remove the old ones. All you have to do is get a long enough extension and the plug key, then unscrew the plugs :D
Then just replace the plugs.
Take the old ones out.....
And put the new ones in
And from here and on, it's all reverse.
and let the e46 DIY's flow!
You put "jap" plugs (NGKs) in your car? :wtf Why?
Bosch FTW i thought?
btw..anyone know why most BMWs have that gaping hole at the back of the passenger side of the Engine bay? So far my car has one, our 330, Rooz's 330 and my friends old 740.
So....wtf is it for?
Im sure this have bee3n brouht up before...but i forgot.
btw what about the torque on the plugs? Did you use that no stick stuff for your threads?
COULD it be for RHD drive cars?
i think that space is also where some models have the ABS brake system.
oh yeah, nice write up, but bosch ftw.
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