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Home >> GMC >> 1991 >> Forward Control 7.4 N >> Repair and Diagnosis (Single Page) >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Fuel System (PFI) >> Fuel System Pressure Relief >> Method 2
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Method 2

Install Fuel Pressure Gauge (J-34730-1) on fuel pressure connection. Wrap shop towel around pressure connection when installing fuel pressure gauge to absorb fuel leakage. Place gauge bleed hose in container. Open bleed valve to bleed fuel pressure.

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