Originally Posted by SHOZ123
You should take the upper intake off to clean it anyway. It will be full of oil and carbon. You probably can reuse the gaskets. I reuse the thin steel type by painting them immediately before reassembling.
Don't put the Bosch +4s in. You will have problems with misfires probably.
Bolts are all metric, get a set.
Thank you for the advice.
Why cann't I use the Bosch Platinum +4? Did you ever try them before?
I checked several online store, P+4 is always an option for my car.
I also ordered a Bosch spark plug wireset, which is goint to be compatible
with the plugs. I hope this work will improve the current poor mileage of
16.3/19.3 to a significant one.