[Meeni]

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]

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

[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). .

[jc_bmw]

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]

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]

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

[savendav]

Originally Posted by roundle

Sorry to jack your thread:

I had my 2011 328iT (39K miles) in for an oil change today. After my SA read my key, he said that the plugs were over-due, so I told him to go ahead and change them.

Anyone know if the Euro plug schedule is different from the US schedule?

From working as a tech at a bmw dealer I believe that spark plug charges are calculated for every 6 oil changes in the cbs on most modern bmws. Of course at 39k they wouldn’t be terrible but bc you’ve changed the oil 6 times the bmw cbs (condition based serice) system automatically recommends spark plugs when you see your SA

[Brandoch]

Originally Posted by savendav

From working as a tech at a bmw dealer I believe that spark plug charges are calculated for every 6 oil changes in the cbs on most modern bmws. Of course at 39k they wouldn’t be terrible but bc you’ve changed the oil 6 times the bmw cbs (condition based serice) system automatically recommends spark plugs when you see your SA

That post was 12 years old that you replied to.

[savendav]

Originally Posted by Brandoch

That post was 12 years old that you replied to.

In another 12 years prepaid someone will find it useful 😂

[Titling]

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