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Home >> GMC >> 1991 >> Syclone V6-262 4.3L Turbo >> Repair and Diagnosis >> Powertrain Management >> Tune-up and Engine Performance Checks >> Fuel Pressure >> Specifications
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Fuel Pressure: Specifications

Fuel System Pressure
Static Pressure Reading 35 to 38 Pound Per Square Inch (psi)
Check pressure with the key ON and the engine NOT running.
Reading At Idle 25 to 30 Pound Per Square Inch (psi)
Engine running at idle speed, vacuum line plugged into regulator.
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