Rajesh technical Blog

Step-by-Step Guide: How to Effectively Test and Diagnose Your Motorcycle’s Ignition (ST) Coil Introduction Hello friends, welcome to Rajesh Technical Blog . Today, we’ll talk about an important yet often ignored motorcycle component — the Ignition Coil , also known as the ST Coil in many bikes. Imagine this situation: Your motorcycle refuses to start on a cold morning, or it starts but runs rough on the road. Sometimes it loses power, misfires, or suddenly stalls. In most cases, the real culprit behind these problems is a faulty ignition coil . The ignition coil is responsible for producing the high voltage needed to create a spark at the spark plug. Without a healthy ST coil, your engine simply cannot run properly. In this step-by-step guide, you’ll learn: How the ignition coil works Common symptoms of a bad ST coil Safety precautions before testing How to test primary and secondary resistance How to interpret test results correctly By the end of this guide, you’ll b...