Ok so I will have to tear down the intake manifold for an oil leak. So while I am there I am going to do wire and plugs.
so an 03 with sai 4.6 which plugs to use ?
now since I am there do I replace coil packs as a maintenance thing?
oh yeah a 146k on the mileage too

thanks

 

Platinum/Double Platinum/Iridium by NGK, Denso, AutoLite are my recommendations. Slap em in and go!

 

what about coils ??

 

I've used generic coils without any issues. The Bosch ones are fine, but I've yet to have a no name kick the bucket on any of the ones I've messed with over the years. Same coil pack design was used on older Kia Sportage's 4 cylinder engines (just one coil pack of coarse), but nothing special or unique to LR about em.

 

so from lucky 8 two new coil packs for 50 bucks a worth wild peace of mind and just do them

 

If you are going to all that trouble yes I would do them.