Lumina APV V6-191 3.1L (1990)
Fuel Pressure Release: Service and Repair
WARNING: To reduce the risk of fire and personal injury, it is necessary to relieve fuel system pressure before servicing fuel system
components.
A small amount of fuel may be released when servicing fuel lines or connections. In order to reduce the chance of personal injury, cover fuel
line fittings with a shop towel before disconnecting to catch any fuel that may leak out. Place the towel in an approved container when
disconnect is complete.
PROCEDURE:
1. Disconnect negative battery terminal to avoid possible fuel discharge if an accidental attempt is made to start the engine.
2. Loosen fuel filler cap to relieve tank vapor pressure. (Do not tighten until service has been completed.)
3. The TBI model 220 contains a constant bleed feature in the pressure regulator that relieves pressure. Therefore, no further action is required.
