no start.

[dieselm]

1991 Ford f 150 5.0 won't start. It's got no spark. No spark coming from the coil. Had a spare distributor, swapped it in. No spark. Had a spare coil ... swapped and still no spark.
Vehicle has code 34. But that has to do with smog....
Ideas? Thanks

 

[blackbox90]

How was it now, did you resolved it? I would start checking with EEC relay and and any blown fuse.