During an engine fire while starting, what should be your first action?

The first action during an engine fire while starting should be to shut down the fuel supply. Cranking the engine can actually exacerbate the fire by drawing more fuel into the combustion chamber, which can create a more severe situation.

In the case of an engine fire during start, the priority is to interrupt the fuel flow to prevent further fueling of the fire. Shutting down the fuel supply will help eliminate the source of combustion. Alongside this, it's essential to turn off the master switch or electrical systems as well to prevent any electrical sparks that could ignite the fire further.

While calling for emergency services is crucial in a comprehensive emergency response plan, it should not be the immediate first action in the case of an engine fire. Instead, focusing on controlling the fire is the priority.