Loss of power and stalling

Hi,

Have you ever trued adjusting the float level in the carburetor? The engine could be starved for fuel if not enough is available. Also, is it possible for you to record what it is doing and uploading it for me to see and hear?

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As far as the float, here are directions. There are two carburetor options. I'll provide directions for both. The attached pics will correlate with the directions.

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1981 Pontiac Grand Prix V6-231 3.8L
Rochester Dual-Jet M2M Series
Vehicle Powertrain Management Fuel Delivery and Air Induction Carburetor Carburetor Float Adjustments Rochester Dual-Jet M2M Series
ROCHESTER DUAL-JET M2M SERIES
Float Level Adjustment

Pic 1

1. Remove air horn, gasket, power piston, and metering rod assembly, and float bowl insert.
2. Attach J-34187-1 or BT-8227A-1 to float bowl.
3. Place J-34187A in base with contact pin resting on outer edge of float lever.
4. Measure distance from top of casting to top of float, at point 3/16" from large end of float. Use J-9789-90 or BT-8037.
5. If more than +/- 2/32" from specification, use J-34817-25 or BT-8427 to bend lever up or down. Remove bending tool and measure, repeating until within specification.
6. Check float alignment.
7. Reassemble carburetor.

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1981 Pontiac Grand Prix V6-231 3.8L
Rochester Dual-Jet E2M Series
Vehicle Powertrain Management Fuel Delivery and Air Induction Carburetor Carburetor Float Adjustments Rochester Dual-Jet E2M Series
ROCHESTER DUAL-JET E2M SERIES
Fig. 5 Float level adjustment. E2M units

See pic 2 for figure 5

Refer to Fig 5 for float adjustment procedure. Adjust as directed to dimension listed under Specifications, Adjustment Specifications.

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If you could, record it with your phone and upload it. Hopefully, if I hear and see how it's reacting, I'll be better able to help.

Take care,
Joe

Sounds good. Let me know if it helps.

Joe