Firebird V8-305 5.0L (1982)
Mixture Control Solenoid: Adjustments
MC Solenoid External Gauge Check
Fig. 1 Checking mixture control solenoid travel. E2MC-ME & E4MC-ME carburetors
MC solenoid travel must be within specifications before idle mixture can be adjusted. Perform check with engine off and air cleaner removed. Before
proceeding, modify float gauge J-9789-130 or equivalent, to fit in "D" shaped vertical vent, Fig. 1, on carburetor air horn.
1. Insert gauge in "D" shaped hole, Fig. 1. Press down on gauge and release, making sure that gauge moves freely, without binding.
2. With gauge released (solenoid up position), read gauge at eye level and record reading that lines up with top of air horn casting.
3. Press down lightly on gauge until bottomed. Record reading where gauge lines up with top of air horn casting.
4. Subtract reading in step 2 from reading in step 3 to obtain total MC solenoid travel.
5. If total MC solenoid travel is 4/32 inch, proceed to "Idle Air Bleed Valve Adjustment." If travel is not within specifications, MC solenoid must be
adjusted.
