you waste your time reading a plug that been idled.
Here is what i recommend to the OP.. I take two extra (used) plugs and the socket wrench in the car with me when i make a pass and need to check plugs..
click it off after the stripe..
coast off the track pop the hood. and pull a plug from #1 and #7. replace with the used plugs.
drive back to pits and read the plugs in your hand.
tune accordingly.
then install two fresh plugs in 1 and 7 make a new pass..and repeat.
a box of 8 plugs will get you four passes to tune on..instead of using 24 new plugs in every hole..for the same 4 passes..
when you get it where you think its working...then i pull all 8 at the end of the track to make sure all 8 are happy...

why do people make things so complicated...


i read somewhere.?you can soak the 02 sensors to make them work again..cant remember what the stuff is called that you soak it in....
ive never done it..