Time to change plugs?

5soko · 07-08-2012, 09:00 PM

2010 n54 25,000 miles.
Tuned since 2,000-3,000 miles..
Fbo for 10,000 miles
E85 mix for 3k miles
Basically no meth

I ordered a set of plugs from tischer but now im wondering if its even worth to change if the car is running good?
Or if its time anyways?

bceagle1991 · 07-08-2012, 09:09 PM

I'd go ahead and change them. I was told every 20,000 on a tuned car.

kavadarci · 07-08-2012, 09:25 PM

the bmw spark plugs should be good for at least 100.000 km (some say 100.000 miles) but there is not wrong with changing them.

Tyetiger · 07-08-2012, 10:02 PM

You should change them at LEAST ever 50k. BMW normally does when you get your oil changed around that time.

Gugs · 07-08-2012, 10:06 PM

If your car is running fine with no idle blips, no misfires, I would leave them. It can't hurt to do them but if it ain't broke...

benzy89 · 07-08-2012, 10:52 PM

Wait until you get that 1st misfire code... No point in making extra costs by replacing plugs that are currently working fine

5soko · 07-08-2012, 11:52 PM

Yea, it was a impulse buy but i have the plugs coming in this week...
I was thinking if it aint broke dont fix it, but since i have them i might aswell change em now. Since at 22K tuned miles im sure the day of misfires will come soon.

geterdone · 07-09-2012, 01:54 AM

I'm in the same boat; my car was acting up and I thought it was the plugs so I purchased some. Ended up not being the plugs, I have about 15k on the car and am debating on whether or not to throw them on.

JamesM3M5 · 07-09-2012, 09:13 AM

Quote:

Originally Posted by kavadarci

the bmw spark plugs should be good for at least 100.000 km (some say 100.000 miles) but there is not wrong with changing them.

On cars where the condition based service interval tracks spark plugs (not all 335s track spark plug use, for whatever reason) the service interval was set to around 47k miles. The non-turbo cars have them set to 100k miles (160k km) but I find that most customer cars that come through here with any more than 60k miles on their original plugs can definitely see a benefit with new plugs - better cold start and better responsiveness. 60k miles on plugs is a lot, and it shows in how much the electrodes are eroded.

Mike@N54Tuning.com · 07-09-2012, 10:46 AM

We usually recommend 20-25k on a tuned car...

Mike

themyst · 07-09-2012, 10:48 AM

5soko if you drive anything like 1lumi I seriously doubt your plugs are bad.

Fwiw I put 32k miles on my 09 e90 lci and never misfired. The plugs looked great when I pulled them too. Probably could have gone a bit longer.

The rule is, if you beat on the car you'll be doing maintenance far more than those who baby their car.

BES335xi · 07-09-2012, 10:59 AM

Quote:

Originally Posted by themyst

5soko if you drive anything like 1lumi I seriously doubt your plugs are bad.

Fwiw I put 32k miles on my 09 e90 lci and never misfired. The plugs looked great when I pulled them too. Probably could have gone a bit longer.

The rule is, if you beat on the car you'll be doing maintenance far more than those who baby their car.

Roflmao! Good advice. He can always pull 'em out and check how they are though, since hes been tuned for awhile now.

idrift4wd · 07-09-2012, 12:40 PM

Quote:

Originally Posted by benzy89

Wait until you get that 1st misfire code... No point in making extra costs by replacing plugs that are currently working fine

+1, id buy them anyways just to make the swap faster and easier when that misfire does happen! its something that is bound the go bad sooner or later.

Turb0Surge · 07-09-2012, 01:15 PM

Won't hurt to change them... Especially if your car is tuned.

kavadarci · 07-09-2012, 01:56 PM

Quote:

Originally Posted by JamesM3M5

On cars where the condition based service interval tracks spark plugs (not all 335s track spark plug use, for whatever reason) the service interval was set to around 47k miles. The non-turbo cars have them set to 100k miles (160k km) but I find that most customer cars that come through here with any more than 60k miles on their original plugs can definitely see a benefit with new plugs - better cold start and better responsiveness. 60k miles on plugs is a lot, and it shows in how much the electrodes are eroded.

Agreed. Thank you.

5soko · 07-09-2012, 07:34 PM

Quote:

Originally Posted by Mike@N54Tuning.com

We usually recommend 20-25k on a tuned car...

Mike

Yea might aswell just change them out now then.

Quote:

Originally Posted by themyst

5soko if you drive anything like 1lumi I seriously doubt your plugs are bad.

Fwiw I put 32k miles on my 09 e90 lci and never misfired. The plugs looked great when I pulled them too. Probably could have gone a bit longer.

The rule is, if you beat on the car you'll be doing maintenance far more than those who baby their car.

Quote:

Originally Posted by BES335xi

Roflmao! Good advice. He can always pull 'em out and check how they are though, since hes been tuned for awhile now.

HAHA.. You guys are funny!!!

Since i got them, i guess ill just change them now anyways..

Quote:

Originally Posted by idrift4wd

+1, id buy them anyways just to make the swap faster and easier when that misfire does happen! its something that is bound the go bad sooner or later.

Quote:

Originally Posted by Turb0Surge

Won't hurt to change them... Especially if your car is tuned.

Yea thats what i was thinking, misfires are bound to happen so at least ill change them now, and ill be good for another 25K..

Dmacc · 07-09-2012, 07:37 PM

I've been tuned since 1k miles and at 26k I started getting a gnarly misfire, guess what it was, PLUGS! So I'd say keep them. They're good for about 45k on stock boost, but when you're running upped boost, they seem to die out around 26-30k miles

themyst · 07-09-2012, 07:39 PM

Quote:

Originally Posted by 5soko

Yea might aswell just change them out now then.

HAHA.. You guys are funny!!!

Since i got them, i guess ill just change them now anyways..

Yea thats what i was thinking, misfires are bound to happen so at least ill change them now, and ill be good for another 25K..

And if u drive like mikhail you're 5k miles overdue lol

5soko · 07-10-2012, 10:23 AM

Quote:

Originally Posted by Dmacc

I've been tuned since 1k miles and at 26k I started getting a gnarly misfire, guess what it was, PLUGS! So I'd say keep them. They're good for about 45k on stock boost, but when you're running upped boost, they seem to die out around 26-30k miles

Interesting.. Yea im gonna tackle changing them today might as well.

Quote:

Originally Posted by themyst

And if u drive like mikhail you're 5k miles overdue lol

gottta love it....

Dmacc · 07-10-2012, 01:19 PM

Quote:

Originally Posted by 5soko

Interesting.. Yea im gonna tackle changing them today might as well.

gottta love it....

Car misfired again on the same cylinder last night

looks like plugs and injectors weren't the culprit

5soko · 07-11-2012, 11:00 AM

Quote:

Originally Posted by Dmacc

Car misfired again on the same cylinder last night

looks like plugs and injectors weren't the culprit

coils? switch the coils around from the cylidners not misfiring, to the ones that are misfiring.

07-08-2012, 09:00 PM	#1
5soko Brigadier General 351 Rep 4,633 Posts Drives: M5 Join Date: Aug 2007 Location: Brooklyn, NY iTrader: (4)	Time to change plugs? 2010 n54 25,000 miles. Tuned since 2,000-3,000 miles.. Fbo for 10,000 miles E85 mix for 3k miles Basically no meth I ordered a set of plugs from tischer but now im wondering if its even worth to change if the car is running good? Or if its time anyways? __________________ Current: E63S AMG 4matic RENNtech \|\| M5 Evolve..Eventuri \|\| F10 LCI 535i MHD
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07-08-2012, 09:09 PM	#2
bceagle1991 Private 2 Rep 65 Posts Drives: 335ix Join Date: May 2011 Location: Boston iTrader: (4)	I'd go ahead and change them. I was told every 20,000 on a tuned car.
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07-08-2012, 09:25 PM	#3
kavadarci Lieutenant 47 Rep 568 Posts Drives: 335xi Join Date: Apr 2012 Location: canada iTrader: (0)	the bmw spark plugs should be good for at least 100.000 km (some say 100.000 miles) but there is not wrong with changing them.
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07-08-2012, 10:02 PM	#4
Tyetiger Private First Class 34 Rep 141 Posts Drives: 07 335xi MperorTuning Stage 2 Join Date: Apr 2011 Location: Hartford, CT iTrader: (1)	You should change them at LEAST ever 50k. BMW normally does when you get your oil changed around that time.
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07-08-2012, 10:06 PM	#5
Gugs Banned 31 Rep 457 Posts Drives: E92 JetBlack Join Date: Jul 2012 Location: Long island iTrader: (1)	If your car is running fine with no idle blips, no misfires, I would leave them. It can't hurt to do them but if it ain't broke...
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07-08-2012, 10:52 PM	#6
benzy89 Banned 83 Rep 2,396 Posts Drives: '08 E90 335i Join Date: Jan 2012 Location: Northern NJ iTrader: (3) Garage List 2008 BMW 335i [7.50]	Wait until you get that 1st misfire code... No point in making extra costs by replacing plugs that are currently working fine
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07-08-2012, 11:52 PM	#7
5soko Brigadier General 351 Rep 4,633 Posts Drives: M5 Join Date: Aug 2007 Location: Brooklyn, NY iTrader: (4)	Yea, it was a impulse buy but i have the plugs coming in this week... I was thinking if it aint broke dont fix it, but since i have them i might aswell change em now. Since at 22K tuned miles im sure the day of misfires will come soon. __________________ Current: E63S AMG 4matic RENNtech \|\| M5 Evolve..Eventuri \|\| F10 LCI 535i MHD
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07-09-2012, 01:54 AM	#8
geterdone Private First Class 6 Rep 144 Posts Drives: 2007 335i Join Date: Mar 2011 Location: Yukon, Oklahoma iTrader: (1)	I'm in the same boat; my car was acting up and I thought it was the plugs so I purchased some. Ended up not being the plugs, I have about 15k on the car and am debating on whether or not to throw them on.
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07-09-2012, 10:46 AM	#10
Mike@N54Tuning.com Joint Chiefs of Staff 5044 Rep 116,174 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	We usually recommend 20-25k on a tuned car... Mike
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07-09-2012, 10:48 AM	#11
themyst Major General 189 Rep 6,631 Posts Drives: '16 MK7 GTI Join Date: Feb 2009 Location: NYC iTrader: (8)	5soko if you drive anything like 1lumi I seriously doubt your plugs are bad. Fwiw I put 32k miles on my 09 e90 lci and never misfired. The plugs looked great when I pulled them too. Probably could have gone a bit longer. The rule is, if you beat on the car you'll be doing maintenance far more than those who baby their car. __________________ E90 LCI N54 6AT
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07-09-2012, 01:15 PM	#14
Turb0Surge Lieutenant Colonel 105 Rep 1,555 Posts Drives: BLACK e90 335i Join Date: May 2012 Location: Lincoln, CA iTrader: (0)	Won't hurt to change them... Especially if your car is tuned.
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07-09-2012, 07:37 PM	#17
Dmacc Colonel 208 Rep 2,799 Posts Drives: 2011 BMW 1M Join Date: Mar 2010 Location: So Cal iTrader: (1)	I've been tuned since 1k miles and at 26k I started getting a gnarly misfire, guess what it was, PLUGS! So I'd say keep them. They're good for about 45k on stock boost, but when you're running upped boost, they seem to die out around 26-30k miles __________________ thanks to MGallop
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