Well, the thing is, my pressure is set to 48psi. In idle, itīs stable at 39psi, and wot itīs stable at 46psi?

One other thing, when I let go of the pedal, the pressure drops to 36-37psi, but then goes up to 39 again. Is this normal? I attached the guage to the window yesterday (before I had it under the hood) so I donīt know for how long itīs been doing this.

What Iīve done with it is in the sign.
/Andreas

 

Well I'm no TPI expert, but I do believe your fuel pressure regulator is vacuum controlled, which accounts for the 10psi fluctuation relative to RPM and throttle position. I wouldn't sweat over it (car runs good, right?) but if anyone disagrees please say so.

 

Yes, the car runs great. Itīs just that I never seen it before. Better to ask one to much.