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Should I Change Ignition Coils?

1198 Views 8 Replies 4 Participants Last post by  nydeuces
I plan on replacing my current spark plugs with Bosch after installing JB4. I am wondering if it is necessary or recommended to change the ignition coils as well.
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You can but not necessary unless you experience hesitations (misfires) after you do. You'll know right away and usually it's just one of the coils.
Thank you for your reply. Hopefully I wont need to and I can save $$$
I bought a couple lifetime replacement coils from Autozone and so far so good. They also look better built than the Bosch coils but who really knows?
How many miles you have now?
Nope. Unless there's a fault they're good.

Injectors same.

Intake valves, not so much! If you're near 60k mi since last blast, time t'do it again....

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I plan on replacing my current spark plugs with Bosch after installing JB4. I am wondering if it is necessary or recommended to change the ignition coils as well.
~43,000
how many miles you have now?
Here are some maintenance schedule for BMW per mileage courtesy of Bavauto.
Thank you for that!
Here are some maintenance schedule for BMW per mileage courtesy of Bavauto.
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