Honda Accord Plug Wire Replace/Remove

I Recently Replaced The Spark Plugs. When I Drove The Car To Test Out The New Plugs, After About 10 Miles The Engine Started To Misfire....

I Was Changing My Spark Plug Wires And The Broke In Half I Can't Get The Piece Out What Do I Do

My Car Starts Normal When It Is Cold And After Driving Itfor Awhile Or Soon As The Engine Heats Up, I Turn The Car Off And Start It Up Again...

I Have A 1990 Honda Accord Ex 5spd With Aftermarket Msd Ignition System & Msd Modified Distributor Cap For External Coil. I Was Driving It...