I replaced the battery and cables. Engine cranks but won't start. on 1998 Ford Windstar

I've checked with a CodeScout 700 code reader and there aren't any codes showing. The engine will start with the code reader plugged in and seems to run fine but still won't start when I unplug the reader. With the engine running there are still no codes. I've checked with a test light all fuses under the hood and the dash. All check okay.

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2 answers 1 comment
what was concern the cables were replaced?
They were original cables and corroded badly.
DO YOU HAVE SPARK AND FUEL PRESSURE?