Internal combustion engine with starting air system

The present disclosure relates to an internal combustion engine (10) comprising at least one cylinder (26A to 26D) for combusting a mixture of fuel and air therein, and a starting air system (90) configured to provide pressurized starting air to the at least one cylinder (26A to 26D) and configured for monitoring the operability of the starting air system (90). The exemplary disclosed starting air system (90) may include a starting air manifold (95) fluidly connected to a pressurized starting air source (91) configured to store pressurized starting air, a starting air venting valve (99) fluidly connected to the starting air manifold (95) and configured to vent the starting air system (90), and a sensing device (100) configured to detect a parameter that is characteristic of the filling of the starting air system (90).