While playing at the local track last week I experienced a random misfire under WOT/Boost. The HT0 plugs that we installed when we put on the Roush SC about 18,000 miles ago needed to be changed so I did so yesterday morning. When the plugs were installed Neil at Troyers insisted that we use anti-seize on them. He definately knew what he was talking about. I removed the old plugs with out a bit of trouble. No squeaking and sweating over this plug change. Every plug came out with ease. I removed the old plugs, installed the new HT0s, and switched back to the stock COP's that I had in the garage just in case the misfire was being caused by the Summit brand that I was running. Entire time to complete the task was 1.5 hours. I removed the computer and its bracket which made gaining access to the back plug much easier.
The plugs I removed were not that bad considering the 18,000 miles they had on them, but I use only Sunoco 94 or Shell 93 fuel so maybe that is why.
I took the truck out and made several hard passes this morning and the misfire has disappeared so if it were not the plugs which I now doubt due to their appearance, it may well have been the COP's. Just thought I would share. Thanks again to Neil for is insistance we use the anti-seize.

 

Glad to hear that you may have nipped it in the bud, Marc.

 

Thanks for sharing. Good info.

 

Thanks!!! That's what I wanted to hear...the plugs came out fine when using anti-seize on them.

R/
Craig