Dealer said to replace them all. I am only going to replace the ones that do not work.

I went out to buy a meter. Saved quite a bit of money.

#1= .02
#2= no reading
#3= .02
#4= .02
#5= .07

I am going to replace the #2 plug. I am sure that will fix the problem. This is why therer is an almost at the header.

Thank You

Nick