Did you check the pressure with the vac. line connected to the regulator? That is "normal" pressure, or "idle" pressure. If you disconnect the vac. line from the regulator, the pressure should go to "Max". If it does not, the regulator is prolly stuck, or bad.
Also, check the pressure with it running, not just sitting with the key on.
Some regulators can burst the vac. diaphragm in them, and you'll wind up sucking fuel up thru the vac. line into the intake, making the engine run a bit rich.
I know my '85 pressures are not that high, but the later cars do run at a higher psi, and use higher flow-rated infectors.
If you do find you have to replace the regulator
, go with the adjustable one. Then you can fine-tune the pressure to match the infectors, and the needs of the engine.
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Joel Adams
C3VR Lifetime Member #56
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