How to Repair a Faulty Starter Motor?
2 Answers
Its working principle involves the rotation of the energized coil in the magnetic field, which drives the starter rotor to rotate. The small gear on the rotor then drives the engine flywheel. Before repairing, it is necessary to inspect the clutch and transmission, and strictly follow the regulations to select the appropriate lubricating oil and fuel, as well as to reinstall the ring gear. Replace the flywheel and ring gear, weld the ring gear onto the flywheel, and correctly use the low-temperature starting device.
As someone who frequently works on my own car repairs, I have quite a bit of experience with small motor failures. Common causes include blown fuses, loose wire connections, or internal motor jamming. My favorite first step is to check the fuse box, locate the fuse corresponding to the motor, and see if it's blown; replacing a fuse only takes a few minutes. If that's not the issue, I use a multimeter to check if voltage is reaching the motor terminals; no power could mean a broken wire, while power but no movement suggests trying to clean the gear section and lubricating it to see if it can recover. If the motor coil is burnt out, the only option is to replace it. For prevention, regularly clean dust around the motor, avoid water ingress and overloading. Always disconnect the battery's negative terminal for safety. If the motor is for wipers or fans, fixing it can save a lot of money. Don't wait until it gets worse; if necessary, seek help from a repair shop.
