Toyota Repair: TOYOTA CAMRY, toyota camry, timing belt

Question
I have a 95 4 cylinder camry.   When i cranked the car to go to work it ran very rough as though it was miss firing on several cylinders. It stopped running 2-3 miles down the road.  It was running fine the night before.  There was no spark at the plugs. I changed the rotor, cap, plugs, wires. The engine turns over, has compression but no spark at the rotor. What do i need to check for spark at rotor?

Answer
The timing belt may have failed, it may have jumped on the gears, this is the first thing to check when this car starts running erratically or dies. If the timing belt is not the problem then I would recommend replacing the ignition coil inside the distributor.