Hello,
There are few components that needs to be remove before you can access the ignition coils. In order to replace the ignition coil, the upper intake manifold need to the removed.
It is difficult to quote the labor as shop rates varies. It could be a 1†2 hour job.
Keep in mind that the engine can also misfire due to a bad spark plug.
https://www.2carpros.com/articles/how-to-test-an-ignition-system
I have attached the replacement instructions for your reference.
Please let me know of any questions.
Thank you.
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Friday, October 15th, 2021 AT 1:49 PM