What is a common reason that a split phase system may fail to start?

In a split phase system, a common reason for failure to start can be attributed to an improper air gap. The air gap is crucial in ensuring that the motor can maintain the necessary magnetic fields for operation. If the air gap between the rotor and stator is not set correctly, it can lead to inefficient operation or failure to generate the necessary torque to start the motor.

This situation can cause the motor to stall or struggle to initiate movement, as the magnetic interaction that promotes rotation is compromised. Proper maintenance of the air gap is essential for the effective performance of motors, particularly in split phase systems, where the correct phase relationship is vital for starting and running efficiently. While excessive load, low fuel, or wiring issues can also impact system performance in different ways, they do not specifically relate to the magnetic interaction and initial torque generation as directly as an improper air gap does.