TBI fuel pressure regulator question

[Len Sabatine]

    Difficult to properly monitor the fuel psi that way. You'll need a 
monitoring setup which
    will show the differential across the regulator [ Fuel feed - return]. 
@ 9- 13 lbs psi, stock.
    Seems enough psi to get started , provided you've got solid fuel flow 
devoid of air
    being mixed in.  It's essential that fuel return works , if not , 
there's an obstruction or
    the regulator may be nixed. Email and phone diagnostics are at best , a 
guess.
    Len


>Dad rigged a fuel pressure gauge today and powered the pump.  The gauge was
>connected to the fuel filter outlet such that the fuel filter was only
>connected to the gauge (i.e. no return path, just pressure to the gauge).
>Reading was 15.5 psi.  I assume this is enough for a TBI pump deadheading
>into a gauge.
>
>The return line from the TBI doesn't have any fuel flowing from it when the
>pump is running, so Dad's going to tear into the TBI and make sure it's
>okay inside.
>
>The real problem for me is that Dad's got the car, and his house is 90
>miles away from mine, so we're having to work through some of this by phone
>until I visit again.
>
>Jay Vessels
>1982 Chevrolet S-10 Sport, 2.8V6 TBI
>1994 Chevrolet Cavalier Z24 Conv., 3.1V6 MPI

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