1994 Ford Taurus 3.8 cranks but won't start

You need 4 things for a car to start: gas, spark, compression, and timing.

You're getting gas and spark. The next step is to check your compression on at least 3 cylinders. If that passes, then check your timing.

The two main components that directly affect timing are the crankshaft position sensor and the camshaft position sensor.

I don't know if you are allowed to adjust the timing using a timing light - that is usually covered by the two sensors mentioned above.