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Home >> GMC >> 1990 >> Jimmy 6.2 C, 700R4/MD8 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Fuel System Pressure Relief >> Model 220 TBI Unit

Model 220 TBI Unit

WARNING: To minimize the risk of fire and personal injury, cover area to be disconnected with a shop rag.

Fuel pressure is relieved and drops to zero when ignition is turned off.