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Home >> Chevrolet >> 1985 >> Monte Carlo SS >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - Dual Unit TBI >> Operation >> Fuel Injectors
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Fuel Injectors

The fuel injectors are solenoid-operated devices controlled by ECM. The ECM turns on the injectors solenoid which lifts a normally closed ball off its seat. Pressurized fuel is injected in a conical spray pattern into throttle body, just above throttle valve. Fuel which is not used by the injectors passes through pressure regulator before being returned to fuel tank.