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 MANUALSCHEVROLET1985SPORTVAN G20, 6.2 C, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMCARBURETOR - ROCHESTER E4ME & E4MED 4-BBLADJUSTMENTSCHOKE UNLOADER
1985 Chevrolet Sportvan G20, 6.2 C, Standard
Choke Unloader
1985 Chevrolet Sportvan G20, 6.2 C, StandardSECTION Choke Unloader
NOTE:
Choke coil lever and choke rod (fast idle cam) adjustments must be correct before performing this adjustment. Adjustment is performed with choke valve angle gauge. DO NOT
remove rivets and choke cover to perform this adjustment.
- Attach rubber band to Green tang of intermediate choke shaft. Open throttle to allow choke valve to close. Set up angle gauge. Hold secondary lockout lever away from pin. See Fig 1 .
- Hold throttle lever in wide open position. To adjust unloader, bend choke unloader tang on fast idle lever until bubble of choke valve angle gauge is centered. Remove gauge.
NOTE:
Bend tang to adjust.
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.