Answer: If you turn your key in the ignition and nothing happens or the starter clicks momentarily or cranks very slowly, then you have a problem with your starting system. However, diagnosing what is causing these problems is often difficult. So, if you experience a problem with your vehicle not starting, remove your starter and battery and take them to a service technician or an auto parts store and have them tested. If the starter fails the tests, it will be necessary to replace your starter.