Cylinders 2 and 6 misfire?

Are there any trouble codes if so, can you give us the code numbers this guide can help:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

If the spark plugs are a different color in # 2 and #6 cylinders, I would do a compression test and if they are okay replace the fuel injectors.

Here is a guide to help with the test:

https://www.2carpros.com/articles/how-to-test-engine-compression

Here is how to remove the fuel injectors to replace them with new units. Also, these engines had a problem with carbon build up on the back of the intake valves which you can check for when removing the fuel rail. If so, this will need to be cleaned by a shop who has the cleaning machine. Check out the images (below). Please upload pictures or videos in your response to the problem so we can see what's going on.