How much does it cost to fix a cylinder 2 misfire in a 2000 Mitsubishi Galant?

A cylinder misfire can be a number of things. If you have a coil pack that has more than one coil on it, like a 4pack or a 6pack set up, it could be that that particular coil isn't firing. PUll off the wire on the number 2 cylinder and put a screw driver in it, touching the electrode wire inside, the lean it near a metal component on the engine and have someone turn over the engine like your starting the car, and if you don't see Any spark, and you are sure you are touching the metal wire piece inside the spark plug wire, then the coiil is probably bad. If you get spark, you probably have another issue. One thing I know for sure...... carbon build up around the intake valve or exhaust valve due to a leak in the exhaust, will definitely cause a misfire, and that's gonna cost ya lots to remove the head, get a valve job done, and fix the exhaust leak that caused it. Can also be other things too. Just try the spark test first, and then if you get spark, take your car to a good repair shop. Goood Luck.