First check if the engine pressure is sufficient? If there is no problem with the upper part of the engine (middle cylinder, rings and valves), if there is a blowing noise it is usually due to a broken spark plug or poor ignition (l igniter is broken, trigger is broken). , or the generator rotor is not positioned correctly). It is out of position, mainly because the clips are damaged and flattened, or the timing chain is too long to move out of position, the cam system is. broken). By the way, this can also happen when there is water in the gasoline, so generally speaking, the prosecution aspects can be resolved. Do you have to do it yourself? If so, you may have installed it in the wrong position, so you can also ask an auto repairer to fix the problem. Now you have replaced the piston and ringspiston teeth. For what ? Is there not enough pressure? By the way, you said (oil flows out of the exhaust port), so have you checked the valve oil seal? If the valve oil seal has no sealing performance, oil will come out. Of course, it is also possible that there is a hole in the valve position where the air comes out. If the oil does not come out, take it yourself. a look? But this has nothing to do with whether you fire the gun, so you should check the ignition system and the distribution system as I said above.
What is the reason why the motorcycle spark plug does not ignite
< p>Ignition The coil generates a voltage high enough to ignite a spark between the electrodes of the spark plug.
The primary and secondary coils are wound around the core. The number of turns of the secondary coil is approximately 100 times that of the boprimary bin. One end of the primary coil is connected to the igniter and one end of the secondary coil is connected to the spark plug. The other ends of the two coils are connected to the battery.
When the engine is running, current from the battery flows through the igniter to the primary coil based on the ignition timing signal (IGT) output from the engine ECU. As a result, magnetic lines of force are generated around the coil, which contains a magnetic core at the center.
Three elements for a gasoline engine to operate properly
Good fuel mixture, high compression pressure, correct ignition timing and strong spark. The strong spark generated in the ignition system ignites the combustible mixture at the optimum ignition time.
The ignition system generates sparks using the high voltage generated by the ignition coil, igniting the compressed combustible mixture.The combustible mixture is compressed, ignited and burned in the cylinder to produce engine propulsion.
The reason why motorcycle spark plugs do not light isdue to faulty components in the ignition system, or because the circuit between ignition system components is open or short circuited. -circuited. Wiring plugs and switches are loose or have loose connections or poor contacts. It is necessary to check if there are any problems with the affected parts and circuits of these ignition systems. First find the specific cause of the fault, then repair it if necessary.
If the motorcycle spark plug is not sparking, first of all, you can try replacing it with a good quality spark plug of the appropriate type. The spark plug itself is a wearing part. and a consumable part, and it is relatively feasy to damage it. If after replacing the spark plugIt starts to ignite, it means that there is a problem with the spark plug. If the spark plug is often damaged and needs to be replaced, the general reason is that the quality of the spark plug itself is poor, or the calorific value of the model is inappropriate, the engine burns oil, that the gasoline is of poor quality. quality, high voltage is low, etc., which can easily damage the spark plug.
If the spark plug still does not spark after replacing the spark plug, check if the high voltage assembly, igniter, magnetic coil, ignition lock the ignition switch door and kill switchare damaged. and if they are damaged. If there is an open circuit or short circuit fault in the circuit between the ignition system components. If it is amotorcycle with electronic injection, also check the sensors related to the ignition system and if there are problems with their wiring. The cause of a motorcycle breakdown without high voltage electricity lies in the ignition system components and their circuits. As long as the qualified components and circuits are checked separately, it is not difficult to check the specific problem.