4.0 Fuel pressure?

[97fordrunner]

Any one know what a '97 4.0 should run for fuel pressure? My truck has thrown codes that say bank 1 and 2 running lean as well as a few other lean codes and it idles like crap when warmed up and surges at constant throttle.

 

[Sasquatch_Ryda]

Should be 35-45psi running IIRC

 

[97fordrunner]

I am only pushing 30-32 PSI, think the fuel pump is getting weak? That would also cause lean codes I would imagine

 

[RedRanger_97]

Make sure you pull the vacuum from the regulator when you check it.