Reinstallation of Distributor, vehicle won't run.

I have a 1990 Ford Mustang 5.0 with 100,000 miles plus.

I recently installed new mufflers, new exhaust headers and gaskets, and new upper and lower intake manifold gaskets.

During the repair it was necessary for me to remove the distributor which was not at number 1 top dead center but I thought I had carefully marked the location of the distributor to reinstall in the same orientation.

The vehicle is reassembled and will crank but coughs and chokes and not turn over.

I'm fairly certain all the emissions and vacuum hoses have been reinstalled correctly.


Can anyone help me diagnose this!