electric cub motorcycles quickly identify faulty ignition circuit method

Syria has been previously, resulting in electric cub motorcycles start moving most of the fault lies not in the ignition circuit, therefore, to grasp and understand the rapid identification of the ignition circuit fault approach to jump start a motorcycle of great benefit, for a brief introduction as follows: first, unscrew the spark plug, the spark plug from the hex nut on the cylinder at about 5 ~ 8mm, and let the spark plug skirt facing our sight, electric scooter motor that our eyes can see part of the spark plug center electrode space inside. Then start the engine several times, according to the following four cases troubleshooting: (1) when produced between the spark plug and the cylinder block 5 ~ 8mm long sparks, and can hear the sound of the discharge, while the gap of the spark between the center electrode and the side electrode of a spark is generated also described high voltage ignition circuit is normal. If the engine still does not start, then the blame check the ignition advance angle is correct. If the ignition timing is correct, then the high-voltage ignition system failures. (2) When there are 5 ~ 8mm spark between the spark plug and the cylinder body, but between the spark plug center electrode and the spark-side electrode, while the inner space of the center electrode spark occurs, meaning that high-voltage ignition circuit is still normal, the spark plug may be severe or internal carbon spark plug insulator breakdown, for a new spark plug, the engine will be able to start. (3) When the length between the spark plug and cylinder block produces sparks reach 5 ~ 8mm, when only 2 to 3mm, there are contacts for ignition, it should first check the contact breaker gap platinum, if (According to the provisions of the general plant data sheet is adjusted) between 0.35 ~ 0.45mm, should be considered as normal; then polished down dozens of contacts with fine emery cloth, then wipe clean cloth dipped in gasoline contact surfaces; then start the engine several times, but careful observation breaker contacts between the size of the spark. If the spark intense, electric cub motorcycles is a capacitor in parallel with the contact failure (open circuit), the capacitor can be replaced with a new start. If the spark is weak, showed a spark plug electrode covered with oil, motorcycle engine size should be excluded from the cylinder lubricating oil, cleaning the spark plug electrodes. (4) when there is no spark between the spark plug and the cylinder, then the primary (low pressure section) ignition circuit failure. First check whether there is a gap between the breaker contacts. If there is no gap, the contact gap should be adjusted to 0.25 ~ 0.5mm, and polished wipe. If you can not be adjusted, may be a breaker of friction block wear, breakage, loss, or a pressure spring break, fail, should be replaced with new parts. If there is a gap, the contact surfaces polished clean. If the engine still does not start, electric cub motorcycles must check each low voltage circuit terminals and wires for wear body contact caused by short circuit or open welding, broken places. If Ground place, use tape or other means to make the disengagement. There disconnection place to reconnect, to weld. Without the above phenomenon, we must check whether a short circuit capacitor failure. Can be put under the capacitor welding, measured by other methods (such as a battery in series with the lamp method) at low voltage coil is open circuit or open welding places. If open welding, breaking local, timely weld.