LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Oldsmobile >> 1990 >> Custom Cruiser >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Fuel Control (CARBURETED) >> Float Level (On-Vehicle)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Float Level (On-Vehicle)

  1. Warm engine to normal operating temperature. With engine at idle and choke wide open, insert Float Level Gauge (J-34935-1 or BT-8420-A) into carburetor air horn vent slot. Allow gauge to float freely.
  2. Observe that mark on gauge lines up with top of air horn casting. Setting should be within 2/32" of specified float level setting. See FLOAT LEVEL SPECIFICATIONS table. If float level is not as specified, remove air horn and adjust float level.
FLOAT LEVEL SPECIFICATIONS

Carburetor No. Setting
17086008 11/32"
17086009 14/32"
17088115 11/32"