[HighPlainsDrifter]

Hi,
1st thing is get a fuel pressure gauge and screw it in the fuel rail at the schrader valve, front pass side.
Turn key on, do not start.
Pressure should be 39
Turn key off
Wait 10 minutes, pressure should hold and slowly go down, if it drops quickly then you have a bad fuel pressure regulator or a bad injector. FIX IT NOW
Next is probably a leaking or blown head gasket. Pull the plugs and do a compression test, should have 150 across all cylinders, 5 and 6 are common to get a leak between them with a blower, replace head gaskets.
Good luck,
Perry.