The next most common problems, and some would argue the most common, are engine stalling problems. Let's start with fuel problems. Off camber situations are the norm when going off pavement. With a carbureted engine that was designed to operate mostly on the near level, off camber can cause flooding, or over-fueling, of the engine. This condition can also create a dangerous situation.
Gas running out over the engine can lead to a fire under the hood.
You can also lose fuel flow due to fuel pump failure or vapor lock. Some vehicles are more prone to vapor lock than others. Vapor lock is caused when the gasoline boils in the fuel line. This condition becomes more common with an increase of altitude. The temporary cure is to wait while things cool down.