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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1985ASTRO VAN PASSENGER, 2.5 E, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMCARBURETOR - ROCHESTER M4M SERIES 4-BBLADJUSTMENTSCHOKE ROD (FAST IDLE CAM)
1985 Chevrolet Astro Van Passenger, 2.5 E, Automatic
Choke Rod (Fast Idle Cam)
1985 Chevrolet Astro Van Passenger, 2.5 E, AutomaticSECTION Choke Rod (Fast Idle Cam)
NOTE:
Adjustment is performed using choke valve angle gauge. See ANGLE GAUGE ADJUSTMENT TOOL procedure at beginning of ADJUSTMENTS.
- Attach a rubber band to Green tang of intermediate choke shaft. See Fig 1. Open throttle and allow choke valve to close.
- Place fast idle cam follower on 2nd step of fast idle cam against shoulder of highest step. With angle gauge in position and set to specification, bubble should be centered. If not, bend tang on fast idle cam to center bubble.
NOTE:
Hold choke closed with a rubber band.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.