How to change spark plugs on e90 3litre - BMW 3-Series (E90 E92) Forum

am@marrantplc.com · 12-04-2005, 09:39 AM

what plug gives the best performance and what mileage is best to change them, and how do you remove the coils over the spark plugs? do you just pull them off. I have tried this but they dont seem to shift and I am concerned I might break the coil if I use too much force, Help

longtran · 12-05-2005, 12:54 AM

isnt it good for 100K miles??

ward · 12-05-2005, 01:05 AM

yeah but what if you want to put those awesome triple fire plugs from TV in????

be sure to remember to gap them properly!

Socom · 12-05-2005, 10:27 AM

It'd stick with OEM. Unlike other manufacturers, the BMW I6 is tuned almost to the max from the factory. But if your butt-dyno think's it's worth it..go for it.

Tierfreund · 12-05-2005, 10:58 AM

Some people just can´t leave well enough alone....

David328M-Sport · 12-06-2005, 07:29 PM

Quote:

Originally Posted by ward

yeah but what if you want to put those awesome triple fire plugs from TV in????

be sure to remember to gap them properly!

With your free GAPPER!!!

poldim · 12-07-2005, 05:45 PM

Quote:

Originally Posted by Tierfreund

Some people just can´t leave well enough alone....

KISS:

Keep
It
Simple
Stupid

segfault · 12-15-2005, 09:46 PM

When I had my 325i at the independent BMW garage having my snow tires put on, the mechanic mentioned that the rear three plugs will be quite hard to reach. He also claimed that, although they are supposed to last 100,000 miles, people often begin to have rough cold starts at 80,000-ish...

Of course, *most* cars are on their second or third owner by then, so most of us probably shouldn't lose any sleep over it!

vleivo · 12-16-2005, 06:02 PM

Change them if you want, but you wont feel any difference, and no there is no power gains to be had by changing plugs.

gdcwatt · 12-21-2005, 11:44 PM

The English 325i has virtually the same power and torque output as the US 325i, but accelerates slightly quicker - with a 2.5L engine. Sharing the same bore and stroke as the Canadian 323i, the English engine also uses less fuel than the Canadian engine, and puts out its maximum hp 750rpm higher, at 6500, and maximum torque 750rpm lower - a nice broad powerband. Well, I think it's at least worth asking where that other 44hp went.

Unless there's a typo - but BMW England told me not to worry about it - it sounds like the 323 and 325 engines were designed to be less than optimal - for marketing purposes.

12-04-2005, 09:39 AM	#1
am@marrantplc.com New Member Drives: bmw 330 se e90 Join Date: Nov 2005 Location: london Posts: 5 iTrader: (0)	How to change spark plugs on e90 3litre what plug gives the best performance and what mileage is best to change them, and how do you remove the coils over the spark plugs? do you just pull them off. I have tried this but they dont seem to shift and I am concerned I might break the coil if I use too much force, Help
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12-05-2005, 12:54 AM	#2
longtran Moderator Drives: E90 M3 Join Date: Jul 2005 Location: CA Posts: 16,606 iTrader: (105) Garage List 2006 325i [0.00]	isnt it good for 100K miles?? __________________

12-05-2005, 10:58 AM	#5
Tierfreund Major Drives: E90 330i Join Date: Apr 2005 Location: Germany Posts: 1,002 iTrader: (0)	Some people just can´t leave well enough alone.... __________________ No, not THAT kind of tierfreund!

12-16-2005, 06:02 PM	#9
vleivo Private First Class Drives: e90 325i steptronic Join Date: Sep 2005 Location: Finland Posts: 138 iTrader: (0)	Change them if you want, but you wont feel any difference, and no there is no power gains to be had by changing plugs. __________________ Bmw 325i -06 "Slush o' matic" 20" Hartge classics with Falken 245/30 and 285/25Eisenmann race 2x76mmK&N Euro cone filterH&R Cupkit raceOem Front and Rear spoiler* Xenon led ringsBlacklines

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12-05-2005, 01:05 AM	#3
ward Major General Drives: F Join Date: May 2005 Location: T Posts: 6,162 iTrader: (0)	yeah but what if you want to put those awesome triple fire plugs from TV in???? be sure to remember to gap them properly!

12-05-2005, 10:27 AM	#4
Socom Brigadier General Drives: 2010 335D Join Date: May 2005 Location: USA Posts: 4,748 iTrader: (0)	It'd stick with OEM. Unlike other manufacturers, the BMW I6 is tuned almost to the max from the factory. But if your butt-dyno think's it's worth it..go for it.

12-15-2005, 09:46 PM	#8
segfault Private First Class Drives: No longer own a BMW Join Date: Apr 2005 Location: . Posts: 137 iTrader: (0)	When I had my 325i at the independent BMW garage having my snow tires put on, the mechanic mentioned that the rear three plugs will be quite hard to reach. He also claimed that, although they are supposed to last 100,000 miles, people often begin to have rough cold starts at 80,000-ish... Of course, most cars are on their second or third owner by then, so most of us probably shouldn't lose any sleep over it!

12-21-2005, 11:44 PM	#10
gdcwatt Enlisted Member Drives: 2003 Mazda Protege Join Date: Nov 2005 Location: Toronto, Canada Posts: 32 iTrader: (0)	The English 325i has virtually the same power and torque output as the US 325i, but accelerates slightly quicker - with a 2.5L engine. Sharing the same bore and stroke as the Canadian 323i, the English engine also uses less fuel than the Canadian engine, and puts out its maximum hp 750rpm higher, at 6500, and maximum torque 750rpm lower - a nice broad powerband. Well, I think it's at least worth asking where that other 44hp went. Unless there's a typo - but BMW England told me not to worry about it - it sounds like the 323 and 325 engines were designed to be less than optimal - for marketing purposes.