1986 Ford F-150 TIMING TROULBE

Engine Performance problem
1986 Ford F150 6 cyl Two Wheel Drive Manual

I AM HAVING TOUBLE GETTINF MY F-150 6CYL TO START BEEN WORKING ON TIMING DONE THE TOP DEAD CENTER AND STILL NOTHING WHAT OTHER STEP TO I NEED TO TRY OR WHAT ELSE COULD I NEED TO CHECK TO FIX THIS PROBLEM