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.
1983 Chevrolet Forward Control 4.8 T, StandardFACTORY OEM SERVICE PROCEDURE
Accelerator Pump
- Close throttle valves completely. Make sure fast idle cam follower is off fast idle cam steps. Bend secondary throttle closing tang to fully close primary throttle valves. Readjust after accelerator pump adjustment.
- Make sure accelerator pump rod is in specified hole (inner or outer) of accelerator pump lever.
- Using a "T" scale, measure specified distance from top of choke valve wall (next to vent stack) to top of pump stem.
- To adjust, bend accelerator pump lever at point shown in Fig. Fig 1.
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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