3500 4x2 Pickup L6-359 5.9L DSL Turbo (1994)
Vacuum Gauge Connection
Connect vacuum gauge to T-fitting as shown. The vacuum gauge will not indicate a vacuum until the transfer pump begins to operate at full
capacity
Inlet restriction must not exceed 100 mm Hg (4 in Hg). If the restriction is higher than the specifications, check for a kinked fuel line or a plugged
fuel tank vent. A partially clogged in-tank fuel filter can also cause excess vacuum.
