If the airflow meter vane does not move with the engine running, you will have little or no output from the fuel distributor. There is a direct linkage from the vane to the fuel distributor plunger, which regulates output flow to the injectors. The airflow path must pass the vane. If the vane moves easily when pushed, but not with the engine running, you have an air leak in the intake.

I also think you are telling me you haven't actually measured the fuel pressure. The pump must be capable of around 100 psi. If you are inferring adequate pump pressure just because you have flow, this method will hide a weak pump.

Steve

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'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7