1994 Nissan Sentra

I own a 1994 nissan sentra 1.6L. I changed cap rotor, plugs, and fuel filter. My problem is the car will not start. I have positioned number 1 cylinder at TDC and found rotor to be facing to right side bottom wire position. The timing lines are close to the vicinity of the timing mark. I have played with the wires in all positions and no luck starting the car. I have also checked spark plugs to see if fouled. I have it in firing order 1-3-4-2 I was wondering if a sensor or other electrical problem could have occured, can anyone help.