Dear 2007 Toyota Camry 2.4L engine owner,
After only 30,000 miles on my Iridium DENSO SK20R11 plugs, the gap grew from a .043 in. to a whopping .073 in. on all four plugs! This increase of gap seems a lot from the previous spark plugs that have been in my 2007 Toyota Camry 2.4L engine. The engine has 146,000. miles on it. Any ideas why the gap grew so much on these Iridium plugs?
John R. Davis