Where is the problem if a motorcycle has no high voltage electricity?
2 Answers
For an EFI motorcycle without high voltage electricity, the main causes include spark plug, ignition coil, ECU, ignition switch, kill switch or side stand kill switch, damage to sensors related to the ignition system, or open circuits, short circuits, and loose connections in the wiring between these components. Classification of EFI motorcycles: 1. Closed-loop type: The function and role of closed-loop EFI motorcycles are basically the same as those of cars. Closed-loop EFI motorcycles can adjust the fuel injection volume of the injector based on the oxygen content in the muffler, and can also change the intake pressure according to changes in external atmospheric pressure. Most domestic motorcycles seen on the market are open-loop EFI motorcycles. 2. Open-loop type: Open-loop EFI motorcycles have been largely phased out due to their inability to meet high environmental standards.
A few days ago, my motorcycle wouldn't start—there was no high-voltage spark. This issue usually stems from the ignition system. If it won't even light a cigarette, the battery might be dead, so check if it's fully charged. A faulty ignition coil can be diagnosed by testing its resistance. Or, the high-tension wire might be broken, connections loose, or wiring short-circuited due to aging. Dirty spark plugs can also cause no spark—unscrew them to check for carbon buildup. Another possibility is a faulty CDI unit; if this little box is broken, it won't generate high voltage. Remember, don’t slack on regular maintenance—periodically inspect cables and components to avoid roadside breakdowns. After riding motorcycles for over a decade, I’ve encountered this issue often. Sometimes, simply replacing the coil fixes it, saving both time and money.
