Firebird V8-305 5.0L (1982)
mixture needle clockwise until lightly seated, then turn each mixture needle counterclockwise three turns out.
5.
Adjusting The Idle Air Bleed Valve - Block drive wheels, place transmission in park (automatic transmission) or neutral (manual transmission)
and set the parking brake. Start the engine and allow it to reach normal operating temperature in closed loop.
6.
While idling in drive (neutral for manual transmission), adjust both idle mixture needles equally, 1/8 turn at a time, until the dwell reading varies
within the 25-30~ range. If reading is too low, turn mixture needles counterclockwise. If reading is too high, turn mixture needles clockwise.
Allow time for dwell reading to stabilize after each adjustment.
7.
After all adjustments are complete, seal the idle mixture needle openings using silicone sealant (RTV). The sealer is required to prevent any fuel
vapor loss.
8.
Perform Idle Speed adjustments as necessary.
