If a 1976 El Camino has a replaced engine, what must be ensured for emissions compliance?

• A. The replacement engine must have all original emission controls.
• B. The replacement engine must be identical to the original year's engine.
• C. The replacement engine requires no emission controls.
• D. The replacement engine must be tested separately.

Answer: (B)

When replacing an engine, California requires the replacement to match the vehicle’s original emissions setup so the emissions controls and certification stay consistent with what the vehicle was designed to meet. For a 1976 El Camino, this means using the same year engine. That keeps the engine’s emissions equipment (carburetor or EFI, EGR, PCV, timing, etc.) aligned with the original certification and testing requirements, making it easier to pass the smog inspection.

Using a different year engine could change the emissions characteristics and require different controls or retesting, which isn’t how compliance is demonstrated. The idea that the engine would need no emission controls or would be tested separately doesn’t fit how replacement engines are evaluated for this vehicle.