Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPONTIAC1990GRAND PRIX STE, 3.1 VREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM/COMPONENT TESTSFUEL CONTROL (CARBURETED)FLOAT LEVEL (ON-VEHICLE)
1990 Pontiac Grand Prix STE, 3.1 V
Float Level (On-Vehicle)
1990 Pontiac Grand Prix STE, 3.1 VSECTION Float Level (On-Vehicle)
- 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.
- 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" |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.