When changing the spark plugs and wires you might have put the wires onto the wrong plugs or wrong spots on distribution cap. It could cause the plug firing to not be in synch with the corresponding cylinder
I think that the problem could be the sparks hence making the fuel not to get to the cylinder. It could also be due to the poor connection between the fuse and the fuse clips or maybe a leak in the fuel line. Try diagnosing your car and getting possible solutions from the mechanic.