Auto help needed 2006 Ford ranger with a 4.0 and automatic transmission?

OK it will not start but it will crank and crank. The CEL (check engine light) is not on and no codes it has a new coil pack, new spark plug wires, new spark plugs and a new crank position sensor. It it's getting good spark and good fuel but will not fire up at all. Fuses and relays are all good. Anyone got any good ideas please help.

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