2003 Honda Civic ex

Honda will not start. Replaced Cam and Crank shaft sensors, ignition coils, spark plugs, Main relays behind glove box, It cranks but there is no fire. Timing is set, no noise or sense of being stuck when cranking by hand. what else could it be?

Vehicle had over heated, so I bought it off the owner, come to find out they had put diesel fuel in it and drove about 60 miles before it overheated. fuel tank has been cleaned, pump still works, injectors work… all cleaned.. gas is flowing..