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.
Secondary Throttle Lockout
Close choke valve fully so lock lever tang is engaged in slot of fast idle cam. Measure clearance between side of lockout lever tang and edge of slot in cam (see Figure). Adjust by bending tang on fast idle cam; clearance should be as follows:
| Model | Clearance |
|---|---|
| 1963 Pontiac Tempest 4 Cyl. | .030" |
| 1964 & Later Cadillac | .020" |
| All Others | .015" |
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.