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GMC
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1981
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Magnavan Standard Trans
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Repair and Diagnosis
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Engine Performance
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Tune-Up
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Tune-Up - V8
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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