What are the causes of starter freewheeling failure?
2 Answers
The causes of starter freewheeling failure are as follows: 1. Whether the starter drive gear and engine flywheel ring gear are excessively worn or the teeth are broken. 2. Whether the friction clutch is intact and effective, and whether the spring tension meets the specified value. 3. Due to long-term use and frequent exposure to high temperatures, the starter transmission fork is prone to fatigue, even distortion and deformation, losing its proper performance. Extended content: The troubleshooting methods for starter failure are as follows: 1. Clean and disassemble the starter, and visually inspect the wear of the shift fork and shift fork ring to see if there is excessive wear or breakage. 2. While performing a performance check on the friction clutch (engagement device), also check the spring extension tension. 3. Inspect the wear degree of the starter drive gear and engine flywheel ring gear separately, or use special tools to measure the taper of the gear teeth.
As an experienced driver, I've encountered the annoying issue of starter motor free-spinning several times, where you hear the whirring sound during startup but the car refuses to move. This usually happens when the starter pinion fails to engage with the flywheel ring gear, possibly due to worn gears, aged springs unable to push effectively, or a faulty solenoid preventing the gear from extending. Low battery voltage is another common culprit, as insufficient power prevents the gear from locking onto the flywheel. It's advisable to first check the battery voltage with a multimeter, then inspect for loose wiring connections. If free-spinning occurs frequently, the solenoid or gears may need replacement. Addressing this early can prevent breakdowns and save you the hassle of towing.
