The fuel pressure that is required'?

depending on the model 4cyl. 2.2 and v6 2.8 and 3.1 have 35 to 40 psi running and 40 to 45 psi initial key on engine off--- as for 2.3 ltr quad 4's 40 to 45 pi running and almost 50 to 55 psi key on engine off