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Home >> GMC >> 1987 >> Value Van P3500, 5.7 M, Automatic, 475/M40 >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - TBI >> Trouble Shooting >> Dieseling, Run-On
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Dieseling, Run-On

Check fuel injector(s) for leaks by applying 12 volts to fuel pump test terminal (to turn on fuel pump and pressurize system). Visually check injector(s) and throttle body injector assembly for fuel leaks.