Maybe translate as toasted, arcing damage, electicity melting and damaging parts Example bujías 2 y 4 como con una capa de carbonilla y sus correspondientes bobinas completamente fogueadas y llenas de corrosión de la mala ...
/www.bmwfaq.org/threads/del-estado-de-mis-bujias-y-bobinas-p...Latin Am sp literally to shoot with bullets
http://www.spanishdict.com/translate/foguearmaybe like a PEEN Surface damage by a hammer, but due to electric arcing, flashing, jumping, etc
damaged by electrical arcing, poor connection, burned up ignition points have appearance of battered metal and blue tinge due to arcing, having small pits in the metal from arcing,