Fuel filter

I would cycle the ignition on for 5 seconds and back off, do that five times.

Without cranking engine and leave turned off for 5 seconds too.

I have tried that. Still the same. Its getting fuel to the shradder valve

most filters have an arrow showing flow direction, what if it has a check valve to restrict a reverse drain of the lines

May should check fuel pressure then.

Thats next it seems to have good pressure at shradder valve but I havent used a gauge

that fuel at the shradder valve must be about 57 psi. to prove the fuel pump is up to par