vacuum/exhaust leak
#16
Go to shbox.com.He has lots of usefull info.Tells the lenght of each plug wire for each cylinder.Also might be able to identify that tube.Good luck and have fun with those wires.Look to be a pain on passenger side.
#17
Sorry,at shbox.com ,click on the center of page where it saysTech page-component views,how to's-diagrams,etc.then click on reference area.#12 is stock plug wire length.Should put you in the ball park even if you use other brand wires.
#19
shbox.com is for ltx models