95 astro died driving won't start

i read every post i could find in here but nothing helped.

4.3, fuel pump passes tests, relays, oil pressure switch, filter etc... starts with gas poured in intake. all connectors in, around, under battery have passed inspection with multimeter. all fuses, relays, connectors that i can find are good. spark is excellent. no codes present / saved.

everything that i know to check is fine.

it just won't fire on it's own! somebody please help!
thx,
zschoche

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Did you check the fuel pressure? The pressure on the CPI systems are critical. When was the last time you replaced the fuel filter?