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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 1
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Method 1

Disconnect fuel pump electrical connector. Start engine and allow to run until it stops. Operate starter for 3 seconds to remove remaining fuel from fuel lines.

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