You need to "ground" a plug wire or the coil wire to the engine block - remove one plug wire from the plug or remove the coil wire from the distributor cap; hold the wire well on the insulated part away from the end and place the end close to the block (stick a phillips screwdriver in the end if necessary to get a conductor close to the block) and have someone crank the engine. If there is no spark, then the coil, ignition module or one of the inputs to the module is probably bad.