K 2500 3/4 Ton Pickup 4WD L6-292 4.8L VIN T 1-bbl (1982)
Fig. 63 - Propane Enrichment Specifications
12. Adjust idle speed to specified enriched rpm, Figs. 62 and 63, following procedure in step 3.
13. Turn mixture screws clockwise equally, 1/8 of a turn at time, until specified curb idle speed is obtained.
14. Repeats step 5 then turn OFF propane flow. If enrich rpm is not within specifications, repeat step 10-14.
15. If equipped with a throttle stop solenoid:
a. Disconnect wiring harness connector to solenoid.
b. Adjust low idle speed to specifications with throttle stop screw.
c. Connect wire to solenoid.
16. If equipped with an A/C speed-up solenoid:
a. Disconnect wiring harness connector to A/C compressor and place A/C control in ON position.
b. Momentarily open throttle to allow solenoid plunger to extend, then adjust A/C idle speed to specifications with solenoid plunger screw.
c. Turn A/C OFF and connect wiring harness connector to compressor.
17. Remove enrichment tool an install PCV tube in air cleaner. Connect vacuum hoses to proper fittings.
Heavy Duty
NOTE: For curb idle speed specifications see; under hood label or Idle Specifications.
NOTE: Light Duty vehicles with Gross Vehicle Weight Rating above 6000 Lbs. (8500 Lbs. for California), except passenger carrying vehicles with a
capacity of 12 persons or less, are Heavy Duty emissions vehicles.
6-292 Engines
Adjustment Set Up
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A/C control must be in OFF position during adjustments.
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Perform adjustments with transmission in neutral on all models.
