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.
Tune-Up Notes
Due to late changes and corrections, always refer to Engine Tune-Up Decal in engine compartment before tune-up. If information here and the decal differ, always use decal specifications.
With the exception of initial ignition timing, normal tune-up adjustments are not required. Perform adjustments only when indicated by the Computer Command Control (CCC) System Performance Check, CCC diagnostic charts and/or poor engine performance. See appropriate article in ENGINE PERFORMANCE section for diagnostic information.
DO NOT allow or create a condition of engine misfire in more than one cylinder for an extended period of time. Damage to catalytic converter may occur due to loading converter with unburned air/fuel mixture.
Damage to HEI electronic module and/or ignition coil may result if "TACH" terminal in distributor cap connector is grounded.
NO RELATED
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.