Helped install a set of plugs yesterday to find a foreign object that fell in back driverside hole #8.. Tried a couple of things to remove with no luck for over an hour....we were stuck....I then had an idea to crank engine over to purge some air out of hole and see if the air would dilodge the debris and guess what shot out of the plug hole at bout 50 mph....my friends rubber air tube plug that he lost last year....