Chevrolet Full Size Cars 1979-1989

Relieving Fuel System Pressure


The model 220 TBI unit has a bleed in the pressure regulator in order to relieve system pressure any time the engine is turned OFF , however a small amount of fuel may still be released when a fuel line is disconnected. As a precaution, cover the fuel line with a cloth and dispose of properly. Also, the fuel tank filler cap should be removed, then reinstalled in order to release tank pressure before disconnecting any fittings.