will not show any code. what would be the most common problem?
engine cranks over but will not start. there is no spark. on 1997 Ford F-150
POSS IGNITION MODULE OR P/U COIL, I REC YOU REPL AS A SET DUE TO AGE. THEY ARE IN DIST AND ON SIDE. IT MAY BE COST EFFECTIVE TO REPL THE WHOLE DIST INSTEAD OF EACH PART