Re: 5.0 running rich
From what you've detailed, my first thought would be perhaps the fuel pressure regulator has gone bad. If you can get your hands on a fuel pressure gauge, check it out. It should be in the low-mid thirties. If it is bad, an aftermarket regulator and gauge can be had for fairly reasonable prices from several sources.
1993 5.0 LX 'Vert
GT-40X303 heads, E-cam, 1.6 roller rockers,
Cobra intake, Edelbrock 65mm t/b, 73 mm C&L, CAI,
24 lb injectors, AFPR, 3.73's, March underdrives.
FRPP headers, Bassani catted X, SLP Loudmouth.
This thing is loud!!!
Pony R's with Eagle ZR's, stock AOD.
Cervini's Air Extractor hood
2003 GT seats
Springtime Edition mirrors & wing
ff member 157