How to remove a stuck spark plug With longer spark plug life it’s not uncommon to run into a stuck spark plug. But if you exert mega force to remove a stuck spark plug, you can also shear off the threads in the aluminum cylinder head, and that’s a MAJOR repair. Removing a stuck spark plug without damaging the cylinder head takes time and patience. Screw this up and you’ll be in a world of hurt with a repair bill upwards of $500 to $1,200. To take it SLOWLY and … Continue reading Remove a stuck spark plug