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Home >> GMC >> 1981 >> Magnavan Standard Trans >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Tune-Up - V8 >> Fuel Pump Pressure

Fuel Pump Pressure

Pressure (At Idle)
  With Vapor Return Line
    7.4L 7.5-9.0 psi
    All Others 5.5-7.0 psi
  Without Vapor Return Line 7.5-9.0 psi
Volume 1.0 pt. in 30 seconds or less