Have I Finally Found the Root Cause?

In my efforts to get the car to the courthouse to get it inspected, I ran in to some pretty serious problems getting the car to run.  Basically, it’s suffering from the same things that have plagued it for the last year.  When I finally got it back in to the garage, I started doing some pretty radical things to the tune to see what would happen and I found that aside from giving it some pretty outlandish settings, it ran pretty much the same, no matter what.  I checked spark on all four plugs, and that was good.  I wanted to try testing the injectors to see if they were all firing, and as part of that, I went to disconnect the fuel line from the injector rail.

Nothing came out.

I left it disconnected, put a bucket under it, and tried cranking.  No fuel.   The next night, I got a jumper wire and tried running the fuel pump.  I can hear the pump running, but I get a very sporadic splash of gas here and there. 

Tonight I’m going to try a new fuel regulator/filter.  If that doesn’t work (and I don’t expect it to), I’m going to order the Walbro pump from Modern Performance and drop the tank.