m20 fuel pressure question

[BaltimoreBimmer]

Looking in the bently it says fuel pressure for an m20b25 should be 43.5psi +- 0.9 psi.

I am getting a steady 36 psi.

That's the rating for the eta engines... Is this something to be concerned about? Already tested my FPR and confirmed that is not leaking or stuck open/closed.

When I remove vacuum from the FPR (causing it to close) I end up getting around 46 psi which is right on par with the spec for that test.

Is this lower than usual fuel pressure something to be concerned with?

[TobyB]

You're supposed to pull the line- you're fine.

It subtracts manifold vacuum from atmospheric pressure
to give a consistent pressure drop across the injector.

More to the point, 36 psi + .7 bar = 45 psi...

t