Q: Need to know what fuel pressure P.S.I. should be on 1997 Cadillac DeVille

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Hard to start in cold temps, checked FPR no leaking. Next step is to check the fuel pressure. ;What psi should it be at so I know if my fuel pump is weak. Thanks.
(2) Answers
I had this same problem and would kill my battery in winter. Dealership said I had to replace a part that keeps fuel pressure in the line @ $1,300. I found a solution to the problem...Turn key just to acc until the "ding, ding, ding" stops, then turn key off. Do this 3 times, then turn the engine over. works everytime, even in sub zero temps!