with no record of coil packs being changed based on all the ppwk i got from previous owner (110K miles). Injector electrical plugs were brittle and falling apart. I ordered new ones from Vics and spliced wires and soldered the new ones on. Now it is alot worse, skipping and ticking noise from coil packs in addition to some arcing i noticed. any ideas...? is it a coincidance or did i do something wrong here? is there anything else that can cause that before i go and spend $700 on new coils?