Some times when i floor it the engine(1jzgte) will idle low 500s or so. So i popped the hood and i could hear a tapping. Kinda like the coil packs where arcing. But before i could pull off the coil cover to see if that was the case it corrected it's self, and ran smooth. What would cause the coil packs to arc only when i floor it? I pulled the coil cover off. I'm gonna wait till it does it again and try and catch it arcing. I'm new to the 1jz thing so be gentle.:1zhelp: