My new / used truck was missing at wot and pinging a bit. It is a stock 3.4l v-6 95.5 tacoma. I decided to check the plugs and change out the fuel filter.
A trip to Autozone and $25 later I had six cheapo bosch super plugs # 7557 and a private label filter # FF692 I was on my way.
Autozone said I should gap the plugs at 0.032. I did that with a jacobs gap pliers and double checked with a small wire gauge.
I removed the old plugs which looked well worn gap was 0.065(no wonder the truc was missing-Stock ignition system can't be good enough to bridge that gap consistantly at WOT). I guess they have been in there for at least 100k miles. One was a stock plug someone had probably forgotten to change.
Fuel filter was full of crap / rust on the tank side.
Truck runs much better at WOT and no pinging.
Maybe I should have used the ngk dual ground strap but the truck has 215k miles and those plugs cost more.
On side note it passed emmisions this morning with okay #'s with the original parts.