n52 Spark Plug Change

Meeni · 04-12-2018, 08:59 PM

Change the coils if one fails. Others may follow after that, but until you get the first failure there's no reason. They can outlast the car in many instances.

jc_bmw · 04-12-2018, 11:09 PM

I guess do people keep one as a backup in case one starts to fail?

nvturbo · 04-13-2018, 11:52 AM

Coils aren't that expensive. No sense in guessing. That's why I replaced all 6 when I was dealing with fluctuating idle. During the replacement, I did noticed one of them was replaced by the previous owner(s). .

jc_bmw · 04-13-2018, 12:34 PM

Quote:

Originally Posted by nvturbo

Coils aren't that expensive. No sense in guessing. That's why I replaced all 6 when I was dealing with fluctuating idle. During the replacement, I did noticed one of them was replaced by the previous owner(s). .

I guess what is the best way to determine if you need to replace the coils?

nvturbo · 04-13-2018, 04:57 PM

Quote:

Originally Posted by jc_bmw

I guess what is the best way to determine if you need to replace the coils?

In my case, the idle fluctuates while in DRIVE, stopped at a stoplight. You can clearly see the idle needle move up and down from 600 to 800 RPMs. Plus, you can feel the car jerk like someone is pushing your car from the rear. New plugs and new ignition coils remedied this issue.

bimmerzeit · 10-27-2019, 07:31 PM

Made a quick tutorial on spark plug and coil pack removal and replacement. Hope it helps someone searching on the DIY for it:

04-12-2018, 08:59 PM	#23
Meeni Gateropode 329 Rep 2,848 Posts Drives: BMW 330i 06 Join Date: Apr 2012 Location: TN iTrader: (0)	Change the coils if one fails. Others may follow after that, but until you get the first failure there's no reason. They can outlast the car in many instances.
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04-12-2018, 11:09 PM	#24
jc_bmw First Lieutenant 59 Rep 383 Posts Drives: 2009 BMW 328i E90 Join Date: Jun 2013 Location: Markham, Ontario iTrader: (3)	I guess do people keep one as a backup in case one starts to fail? __________________ 09 E90 328i 3IM, Eurocharged, K&N, 80W LED Angel Coding: Digi Speed, Express Up Fob, Wipe Wash Count, Weather Station, Headlight Sensitivity
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04-13-2018, 11:52 AM	#25
nvturbo Private First Class 23 Rep 115 Posts Drives: 2006 BMW 330i Join Date: Mar 2018 Location: Charlotte iTrader: (0)	Coils aren't that expensive. No sense in guessing. That's why I replaced all 6 when I was dealing with fluctuating idle. During the replacement, I did noticed one of them was replaced by the previous owner(s). .
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10-27-2019, 07:31 PM	#28
bimmerzeit Private 44 Rep 75 Posts Drives: E28, E39, E90 Join Date: Aug 2019 Location: CT iTrader: (0)	Made a quick tutorial on spark plug and coil pack removal and replacement. Hope it helps someone searching on the DIY for it:
	Appreciate 1 uncoturner5.00 Quote