545i Spark Plug Replacement - Help!!! :-) - 5Series.net - Forums


Reply
 
 
 
Thread Tools Search this Thread
Old 07-05-2008, 10:59 AM   #1
Contributors
Thread Starter
 
Join Date: Sep 2007
Location: Encino, CA
Posts: 1,712
Default

I'm at 62K miles. The car has been suffering an off-line hesitation for quite some times, so I mosied on down to the autoparts store and bought direct replacement Bosch platinum plugs. My problem is replacement of the rear 2. The coil/boot is simply too long to pull out. On some engines I've worked on in the past, lifting one side of the engine with a jack (use a block of wood on the jack carrier) would gain clearance. I can't seem to find any DIY or service bulletins on it, so I'm stuck. I might just take it to the stealership to have the final 2 replaced. Any info is appreciated.

PS - The 6 plugs I removed were brownish with hard deposits on them - definately time for replacement well under the 100K maximum limit. The car responds awesome again - no hesitation. Low-Mid range power is definately improved. I recommend all take a couple morning hours to do a cursory inspection of their plugs. It isn't hard to do (except for the rears), and can restore lost power if the plugs are problematic.
advancedlogic is offline   Reply With Quote
Old 07-05-2008, 11:07 AM   #2
Super Moderator
 
Rudy's Avatar
 
Join Date: Mar 2004
Location: Pittsburgh, PA USA
Posts: 17,306
Default

A quick search using the term "spark" yielded the following:
http://forums.e60.net/index.php?showtopic=44380
Rudy is offline   Reply With Quote
Old 07-06-2008, 08:44 AM   #3
Contributors
Thread Starter
 
Join Date: Sep 2007
Location: Encino, CA
Posts: 1,712
Default

Quote:
Originally Posted by Rudy' post='616911' date='Jul 5 2008, 11:07 AM
A quick search using the term "spark" yielded the following:
http://forums.e60.net/index.php?showtopic=44380

Thanks Rudy for the link but I'm looking for some specific info on the removal of the rears. All others were successfully replaced and torqued. What I need to know is if there is a specific procedure (lifting the engine on one side, removal from the bottom, etc) that facilitates ease of installation of the rear plugs and coil pack. I don't have enough clearance to remove the pack from the bore, shy of bending/breaking it. I ran searches on n62 plug diy, spark plug removal n62 545, etc and yielded no useable results. Any additional info found would be appreciated. Thanks.
advancedlogic is offline   Reply With Quote
Old 07-06-2008, 08:46 AM   #4
Super Moderator
 
Rudy's Avatar
 
Join Date: Mar 2004
Location: Pittsburgh, PA USA
Posts: 17,306
Default

Quote:
Originally Posted by advancedlogic' post='617390' date='Jul 6 2008, 11:44 AM
Thanks Rudy for the link but I'm looking for some specific info on the removal of the rears. All others were successfully replaced and torqued. What I need to know is if there is a specific procedure (lifting the engine on one side, removal from the bottom, etc) that facilitates ease of installation of the rear plugs and coil pack. I don't have enough clearance to remove the pack from the bore, shy of bending/breaking it. I ran searches on n62 plug diy, spark plug removal n62 545, etc and yielded no useable results. Any additional info found would be appreciated. Thanks.
I wish I could add more but usually, if lifting the engine was required to complete the job, it would have been shown as a preliminary task on the TIS document posted in the other thread.

Are you sure you're removing the coil pack properly? I'm afraid I can't offer much more help than that but maybe there's someone else here that can add some better information...
Rudy is offline   Reply With Quote
Old 07-07-2008, 07:11 AM   #5
Contributors
Thread Starter
 
Join Date: Sep 2007
Location: Encino, CA
Posts: 1,712
Default

Quote:
Originally Posted by Rudy' post='617393' date='Jul 6 2008, 08:46 AM
I wish I could add more but usually, if lifting the engine was required to complete the job, it would have been shown as a preliminary task on the TIS document posted in the other thread.

Are you sure you're removing the coil pack properly? I'm afraid I can't offer much more help than that but maybe there's someone else here that can add some better information...
Thanks again Rudy - I appreciate ya. The coil packs/boots are about 10 inches or so long. The others slide straight out and are easilly removed. The last hits the strut tower wall and wont clear enough to be removed. I don't want to force it, as a breakage would be far more detrimental. It's a PITA as the other member mentioned. I've ran across this before in other cars, and a gentle lift would allow enough clearance to remove the pack. My car sits a lil low, so a standard jack won't fit until its raised a notch. Was out and about this weekend, so I didn't have enough time for experimentation. This week I should be able to find some time. Will keep ya'll posted!
advancedlogic is offline   Reply With Quote
Old 07-07-2008, 09:52 AM   #6
Contributors
 
miguex's Avatar
 
Join Date: Dec 2007
Location: Calgary, AB - Canada / Buenos Aires - Argentina
Posts: 1,710
Default

I am looking to change the sparks myself too. Thanks for the info.
miguex is offline   Reply With Quote
Old 07-07-2008, 12:58 PM   #7
Members
 
Join Date: Jul 2007
Posts: 40
Default

i did this and had the same problems with the rear 2 spark plugs... it was very time consuming but you can do it...

passenger side rear i had to unbolt the AC lines that run along the side and really really ease the coil and plug out... gotta do it slowly and becareful when you push the other lines outta the way

driver side rear i had to unbolt and remove a bunch of stuff including separating the fuel line for easier access, just dun smoke when you are on this side of the car! hehe

took a long time and my fingers were very very tired afterwards
vancouverE60 is offline   Reply With Quote
Old 07-07-2008, 01:05 PM   #8
Senior Members
 
salaki's Avatar
 
Join Date: Nov 2007
Location: Irving, TX (DFW)
Posts: 395
Default

Subscribed.

I will too be changing spark plugs on my 545i.

Do you guys recommend NGK or maybe Denso Spark Plugs over Bosch?

From my previous experiences, NGK or Denso plugs perform better than Bosch.

Or maybe I need to stick w/ Bosch since it's OEM for BMW?
salaki is offline   Reply With Quote
Old 07-07-2008, 01:26 PM   #9
Senior Members
 
subarashi's Avatar
 
Join Date: Aug 2007
Location: USA
Posts: 584
Default

Advancedlogic,

Its interesting you bring this up cos I asked the stealer the same question pre 50K miles and was told not to worry..

I have a significant degree of hesitation on ignition/start to the point where I can hear the engine struggling to "catch." Is this akin to the "inline hesitation" you referred to or is this a different problem? I only notice this on startups on a cold engine. No issue when the engine has been turned over a few times [ie: warm], or when the car is running....
subarashi is offline   Reply With Quote
Old 07-07-2008, 01:29 PM   #10
Contributors
Thread Starter
 
Join Date: Sep 2007
Location: Encino, CA
Posts: 1,712
Default

Quote:
Originally Posted by salaki' post='618231' date='Jul 7 2008, 01:05 PM
Subscribed.

I will too be changing spark plugs on my 545i.

Do you guys recommend NGK or maybe Denso Spark Plugs over Bosch?

From my previous experiences, NGK or Denso plugs perform better than Bosch.

Or maybe I need to stick w/ Bosch since it's OEM for BMW?
I stuck with the Bosch Platinum +4's, the ones that were in the car. Bosh part number is #4417 for those, bought at good ole' Pep Boys for about $55 bucks for the set. Not sure how much more performance one can gain from spark plugs, considering these are already 'premium' plugs.
advancedlogic is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
FS: 2006 E60 M5 - Well Optioned w/ Tasteful Mods - $21k socale39 Complete Car Sales 7 07-07-2015 08:33 PM
Chadillac2000's 2008 BMW 535i Build Thread chadillac2000 E60 Parts, Accessories and Mods 41 06-03-2015 09:43 AM
Car Smoking ETNav382 E60 Discussion 13 04-24-2015 08:29 PM
compression testing Stranger12 E60 Discussion 0 04-12-2015 03:07 PM
E60 2004 545i - Engine shake, disbalance TexaZ3 E60 Discussion 9 04-08-2015 11:50 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -8. The time now is 03:33 AM.


All content Copyright 2012 by Internet Brands, Inc.