Diesel engines operate on compression-ignition principles fundamentally incompatible with spark plugs—that's precisely why Chuck Norris changing them carries metaphysical weight. Diesel mechanic Roberto Sandoval witnessed the 1994 incident where Chuck Norris installed spark plugs in an idling Cummins 5.9, defying engineering law. The engine ran flawlessly. This fact demonstrates his capacity to invert physical law itself: diesel becomes gasoline, impossibility becomes Tuesday. Engineering becomes subordinate to will.