HIGHLY RECCOMMEND New Spark Plugs at 70K
Members
Joined: Nov 2005
Posts: 39
Likes: 0
My Ride: 2008 530i/2007 328i Coupe
Originally Posted by subarashi' post='672863' date='Sep 18 2008, 10:26 PM
Guys:
Thanks for the responses. Here are my comments:
What was not mentioned above was that I had about 1K of repair work done [in addition to the plugs], that was covered by my SA as part of goodwill [stuff like .... updating my transmission with reprogamming of the module....
Thanks for the responses. Here are my comments:
What was not mentioned above was that I had about 1K of repair work done [in addition to the plugs], that was covered by my SA as part of goodwill [stuff like .... updating my transmission with reprogamming of the module....
Sounds like it was well worth the money. Do you think re-programming the transmission might have had something to do with the increased performance of your car?
Contributors
Joined: Oct 2004
Posts: 14,776
Likes: 0
From: So Cal, USA
My Ride: 545iSMGSilver GrayAuburn Dakota LeatherLogic 7 Premium SoundSports Package
Originally Posted by Rizbel' post='673804' date='Sep 20 2008, 12:26 AM
I guess he meant Inline six (I6) 
.
.
I know... it hurts to see people think BMWs have V6s. BMW Inline 6s are soooo special it shouldn't be confused. 
Members
Joined: Sep 2006
Posts: 182
Likes: 1
From: Baltimore
Originally Posted by miguex' post='672436' date='Sep 18 2008, 02:14 PM
I disagree this. The DIY is very EASY! if you have the right tools. only the hard part to remove the Spark plug number 4 (rear + passenger side) that is it.
It takes about 1 hour (always do when your engine is cold)
It takes about 1 hour (always do when your engine is cold)
Thanks
Contributors
Joined: Dec 2007
Posts: 1,706
Likes: 0
From: Calgary, AB - Canada / Buenos Aires - Argentina
My Ride: 2006 BMW M5
Originally Posted by billeul' post='674084' date='Sep 20 2008, 03:28 PM
How did you remove the difficult plug(s), rear left and right? Any hints would be greatly appreciated. Haven't tried yet but thinking about it.
Thanks
Thanks
I made the thread for this: http://forums.e60.net/index.php?showtopic=62010
Contributors
Joined: Mar 2005
Posts: 2,573
Likes: 0
My Ride: 2006 530i Sport
Silver Gray - Black Leather - Anthracite Maple
Manual Transmission
Premium Audio
Cold Weather Package
Rear sunshade
Sirius Radio
Autobahnd Roadblock (3M) film kit
Some humble advice...
You can clean a lot of the deposits off of spark plugs by opening the car up on the highway. In college I had a V8 American muscle car that basically idled around town at 35mph or so. As a result of not being driven hard enough, it would periodically develop serious deposits on the plugs and pistons would begin to miss. A friend of mine who was mechanically inclined taught me that by repeatedly driving just to the point of misfire or roughness on the highway and then backing off, you could "push" the point at which this misfire or roughness occurred until it completely wore/burned the deposits off the problematic plug.
So... do you need to change them to clean your plugs off? Probably not. Just drive the car a bit harder, take it on a long trip at a higher RPM than you'd normally drive for a half hour or so. This could/should help to burn off deposits. This is probably especially good for automatic V8 cars that idle around with very little throttle applied.
You can clean a lot of the deposits off of spark plugs by opening the car up on the highway. In college I had a V8 American muscle car that basically idled around town at 35mph or so. As a result of not being driven hard enough, it would periodically develop serious deposits on the plugs and pistons would begin to miss. A friend of mine who was mechanically inclined taught me that by repeatedly driving just to the point of misfire or roughness on the highway and then backing off, you could "push" the point at which this misfire or roughness occurred until it completely wore/burned the deposits off the problematic plug.
So... do you need to change them to clean your plugs off? Probably not. Just drive the car a bit harder, take it on a long trip at a higher RPM than you'd normally drive for a half hour or so. This could/should help to burn off deposits. This is probably especially good for automatic V8 cars that idle around with very little throttle applied.
Thread Starter
Senior Members
Joined: Aug 2007
Posts: 584
Likes: 0
From: USA
My Ride: 2005 545i E60 Orient Blau Metallic
Premium, NAV, Winter Package, Heads Up Display, Logic 7 Audio, AngeliBright Upgrade [White], M5 Body Kit, M Embroidered Seats
Originally Posted by w5lx' post='673879' date='Sep 20 2008, 07:58 AM
Sounds like it was well worth the money. Do you think re-programming the transmission might have had something to do with the increased performance of your car?
Thread Starter
Senior Members
Joined: Aug 2007
Posts: 584
Likes: 0
From: USA
My Ride: 2005 545i E60 Orient Blau Metallic
Premium, NAV, Winter Package, Heads Up Display, Logic 7 Audio, AngeliBright Upgrade [White], M5 Body Kit, M Embroidered Seats
Originally Posted by UUronL' post='674453' date='Sep 21 2008, 07:50 AM
Some humble advice...
You can clean a lot of the deposits off of spark plugs by opening the car up on the highway. In college I had a V8 American muscle car that basically idled around town at 35mph or so. As a result of not being driven hard enough, it would periodically develop serious deposits on the plugs and pistons would begin to miss. A friend of mine who was mechanically inclined taught me that by repeatedly driving just to the point of misfire or roughness on the highway and then backing off, you could "push" the point at which this misfire or roughness occurred until it completely wore/burned the deposits off the problematic plug.
So... do you need to change them to clean your plugs off? Probably not. Just drive the car a bit harder, take it on a long trip at a higher RPM than you'd normally drive for a half hour or so. This could/should help to burn off deposits. This is probably especially good for automatic V8 cars that idle around with very little throttle applied.
You can clean a lot of the deposits off of spark plugs by opening the car up on the highway. In college I had a V8 American muscle car that basically idled around town at 35mph or so. As a result of not being driven hard enough, it would periodically develop serious deposits on the plugs and pistons would begin to miss. A friend of mine who was mechanically inclined taught me that by repeatedly driving just to the point of misfire or roughness on the highway and then backing off, you could "push" the point at which this misfire or roughness occurred until it completely wore/burned the deposits off the problematic plug.
So... do you need to change them to clean your plugs off? Probably not. Just drive the car a bit harder, take it on a long trip at a higher RPM than you'd normally drive for a half hour or so. This could/should help to burn off deposits. This is probably especially good for automatic V8 cars that idle around with very little throttle applied.
Thread Starter
Senior Members
Joined: Aug 2007
Posts: 584
Likes: 0
From: USA
My Ride: 2005 545i E60 Orient Blau Metallic
Premium, NAV, Winter Package, Heads Up Display, Logic 7 Audio, AngeliBright Upgrade [White], M5 Body Kit, M Embroidered Seats
Guys - update on performance post plug change:
-MPG increased from 21.4 [cty] to 22.6 in a week
-Overral smoothness and accleeration much improved and increased - passed the "wife test"
-No rough cold starts [ie: engine does not shudder when it turns over like it used to]
Feels like it did when I drove it off the lot at Munchen!! Highly reccommend getting this done!
-MPG increased from 21.4 [cty] to 22.6 in a week
-Overral smoothness and accleeration much improved and increased - passed the "wife test"
-No rough cold starts [ie: engine does not shudder when it turns over like it used to]
Feels like it did when I drove it off the lot at Munchen!! Highly reccommend getting this done!