Spark Plug Coil - Replacement (?)

Just curious if (when) the coil(s) should be replaced whilst changing out the plugs? I have 213K on my '09 TRD Sport 4x4.

 

I wouldn't reccomend changing coils unless there's a problem, it would be a good idea to change the coil boots at that age and mileage though.

 

This, change the rubber pieces of the coils (you can buy them separate I believe) if needed but no need to replace the coils unless you have codes being thrown.

 

If you change the boots.
Make sure to pay attention to the spring direction.
If memory serves me correctly, @Jimmyh had to help to someone out over this issue once?

I really can’t remember who it was, but I remembered a member here having a problem with that spring inside the boot. Just be sure to take note of how it’s oriented before you pull the boot off.

 

Here is the thread: https://www.tacomaworld.com/threads/spring-inside-ignition-coil-which-way.778244/#post-27827626

This is how they go, with the wide end towards the coil and the other end with the bent cross piece towards the plug.

 

Thanks Jimmy

 

@ Jimmyh, from the other video link you added, the orange gloved guy packed the boot opening going to the plug with dielectric grease. Thoughts on if that is really needed or not will be appreciated.

 

You don't need to pack it full but you want to smear a little around the inside of the opening to help seal out moisture and aid in removing them in the future.
Without dielectric grease they tend to stick to the plugs and can be a PITA to remove in the future.

 

No need to "pack" it full, but dieelectric grease will prevent electrical arcs from the boot and should be added. A good coating should be all you need inside the boot tip area.