I have a 1990 ranger 2.3 I4 that will crank but doesnt start I have replaced the entire fuel system and all the spark plugs and wires, and the Tfi. But it has no spark on the driver side both of the coils work I have swapped them to the other side the passenger side has spark. Its getting fuel, and when cranking it had good oil pressure, I just don't know why it won't start or why it has no spark on the driver side, anyone have any ideas?