What causes a weak spark on a motorcycle?
Category:
automotive
auto parts
Weak spark occurs when the primary side of the ignition coil short circuits within the coil windings.. (Less coil windings to flow through generates a lower voltage spark (Weak Spark) And to test the coil , you need to know the primary and secondary resistance values to determine if it's farked..
Furthermore, what causes weak spark?
Loss of spark is caused by anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. This includes worn, fouled or damaged spark plugs, bad plug wires or a cracked distributor cap.
Also asked, what causes weak spark on outboard motor?
Weak spark may cause starting and running difficulties as there may not be enough heat generated in the spark to accomplish ignition of the fuel/air mix in the combustion chamber. Common reasons for weak spark are faulty flywheel magnets and faulty stator.
The engine will be weak, the unburned fuel will foul the spark plug, and the exhaust will pop. If the mixture is excessively lean, the engine will misfire since the fuel molecules in the intake air are too far apart.