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Old 08-02-2006, 10:39 PM   #1
Rooz

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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 .

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 - )



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

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



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.
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Originally Posted by Gregg
Umnitza now provides a mechanic to install all parts ordered right in the box! It's their new "Total customer service program" that will eliminate all the haters and keep incompetents from breaking **** and blaming the vendor! When you are all set simply call INS and they will pick him up free of charge.
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Old 08-02-2006, 10:42 PM   #2
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and let the e46 DIY's flow!
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Old 08-03-2006, 12:14 AM   #3
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You put "jap" plugs (NGKs) in your car? Why?
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Old 08-03-2006, 12:53 AM   #4
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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?
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Last edited by Numark318i; 08-03-2006 at 12:55 AM..
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Old 08-03-2006, 09:38 AM   #5
Rooz

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Quote:
Originally Posted by c1apton
You put "jap" plugs (NGKs) in your car? Why?
Funny you say that, the plugs that I took out, the factory ones... were NGK's

Quote:
Originally Posted by Numark318i
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?
Yes it has, check it here...

http://www.unitedbimmer.com/forums/e46/3726-what.html
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Quote:
Originally Posted by Gregg
Umnitza now provides a mechanic to install all parts ordered right in the box! It's their new "Total customer service program" that will eliminate all the haters and keep incompetents from breaking **** and blaming the vendor! When you are all set simply call INS and they will pick him up free of charge.

Last edited by Rooz; 08-03-2006 at 11:01 AM..
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Old 08-03-2006, 10:32 AM   #6
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Quote:
Originally Posted by Numark318i
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.
I think it's a carry-over from earlier BMWs. On mine that's where the DME controls sit & on the opposite side is the main fuse box. The added support that the contour of the firewall adds strength to the front end in case of collision.
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Old 08-03-2006, 09:52 PM   #7
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Quote:
Originally Posted by c1apton
I think it's a carry-over from earlier BMWs. On mine that's where the DME controls sit & on the opposite side is the main fuse box. The added support that the contour of the firewall adds strength to the front end in case of collision.
makes sence.
dam germans.
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Old 08-04-2006, 04:31 AM   #8
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COULD it be for RHD drive cars?
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Quote:
Originally Posted by Gregg
Umnitza now provides a mechanic to install all parts ordered right in the box! It's their new "Total customer service program" that will eliminate all the haters and keep incompetents from breaking **** and blaming the vendor! When you are all set simply call INS and they will pick him up free of charge.
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Old 08-06-2006, 01:31 PM   #9
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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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