Immediately after starting an outboard engine in the water, what visual check must the skipper perform at the engine cowling?

1. Verify that a strong, continuous stream of cooling water is exiting the tell-tale outlet (chorro testigo de agua de refrigeración)
2. Check if the spark plugs are glowing red
3. Ensure the propeller has completely detached from the lower unit
4. Verify that thick black smoke is emerging from the carburetor