Quote
.....the pump and filter were replaced before I bought it.


1) You don't know how long before.... don't say what brand - or if it's correctly installed.
2) You don't know what's been in the tank - again, any ethanol fuel will loosen old gasoline deposits and clog a new filter in a real hurry.... and the better the filter quality, the faster it will clog.

Your injectors may be clogged - or any number of other things.... fuel pressure regulator, ECU, distributor, etc. Start with the basics.

Frank

'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum