One of my plugs was cross-threaded in my cylinder head when i bought the car. What i did was carfully hold the spark plug the way it is supposed to screw in and screwed it in slowly back to the original threads, i did this several times. after i was done i used a vacuum to clean any shavings out of the cylinder (it was easy since i had the complet intake assemby off for a waterpump change) and then applied never seize to the park plug threads. Mark anaheim_21 wrote: > Has anyone ever cross-threaded their spark plugs? What did you do to > remedy the situation?