wouldnt it be running lean if the fuel filter was clogged?
Not if the ecm is opening the injectors to compensate. that Coupled with low pressure, leads to fuel drops instaed of spraying. It usually says lean if you try to give it throttle. It will also show rich with a Vacuum leak, which is another thing that commands extra fuel. Check for loose intake manifold bolts. ther is also a possibility that your intake gaskets are bad...old gaskets that are ready to go, usually dont stand up to a good backfire through the intake.
Unfortunately with OBD 1, you have to go through and do the things that May have not been done to figure out a problem. The ECM will tell you of a certain engine condition, but will not tell you about a fuel system problem, like filter, or the line at the fuel pump that likes to split...or a bad ignition coil, or secondary ignition problem....those are still things you have to physically check. The fuel issues can usually be narrowed down with the pressure gauge, which IMO, every TBI owner should have in the toolbox.
