although you can hear the pump running, you still really need to check the fuel pressure & quality at the pressure regulator. There are two stages to the pump & sometimes they sound ok, but still not producing pressure. Also the only reliable way to check to see if the crank signal is ok, is to scope it & check for "noise" &/ or scope the injector current supply to see if the injectors are being operated.If you are getting noise from the starter on the crank signal , you may be ableto get it to go by bump/tow starting it.
regards,Andrew.
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