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Home >> GMC >> 1993 >> Forward Control 7.4 N >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> A-7, Basic Fuel System Checks (Gasoline) >> Fuel System Pressure Relief >> CPI & Port Fuel Injection

CPI & Port Fuel Injection

Fuel system is under pressure, which must be relieved before to servicing fuel system. Fuel pressure may be relieved by one of following methods.