In this guide, we'll give you a step-by-step guide on the easiest ways to find the correct replacement capacitor for your specific pool pump motor. For example, does your pool pump motor only hum when you turn it on? If so, your motor most likely needs a new capacitor. Or, does the motor trip the breaker after only a few minutes of run time? If that's the case, you guessed it; you need a new capacitor.