This past Monday I changed the spark plugs on the 2004 Corolla with 202259 miles.
The old plugs (NGK Laser Iridium) have been in use for 104559 miles. They came out easy from a hot engine, I installed them with copper antiseize probably at the specced 18ftlb.
New Denso Iridium TT plugs went back in, copper antiseize also used, but only 15ftlb this time.
I also performed a compression test, I went by what what I saw the dial go up highest, not by how it rested (not sure that's how it's properly done).
#1
The old plugs (NGK Laser Iridium) have been in use for 104559 miles. They came out easy from a hot engine, I installed them with copper antiseize probably at the specced 18ftlb.
New Denso Iridium TT plugs went back in, copper antiseize also used, but only 15ftlb this time.
I also performed a compression test, I went by what what I saw the dial go up highest, not by how it rested (not sure that's how it's properly done).
#1