electric cub motorcycles exhaust black smoke

electric cub motorcycles to check the concentration of the mixture. Failure symptoms, first check the carburetor throttle. When the engine is working properly, whether catching X vertical organization, failure can not be together, open the phenomenon, if it should be repaired or replaced. Secondly, you should also check: float chamber oil is too high; if not leaking float float; main jet needle is open too; air filter is clogged and so on. After the engine flameout, speaking from the carburetor main nozzle, triumph cub motorcycle or a drop of oil if the oil outflow, indicating float chamber oil level is too high, it should float up tongue subslice appropriate needle bending or increased acne under appropriate pad sheet to adjust. Check the float, if the rupture leakage occurs, should be welding repair or replacement. Note that after the welding repair will increase the weight of the float, loaded with You must re-commissioning, to ensure the normal liquid level. motorcycle engine size  whether there is a triangular needle Mifengbuyan, etc., if it should be replaced. Check the filter, if clogging, and should be cleaned or replaced. Check the spark plug arcing electric cub motorcycles situation. If the spark plug arcing or flashover unusual weak, mixed gas will not burn the whole, the situation will also appear black smoke. Disconnect the spark plug for normal arcing, sparks strong spark plug no fault; if not spark the spark plug electrode along the beating, but four weeks flash, flash is not normal spark plug, electric motorcycle scooter a new spark plug should be replaced; if the spark plug fouling seriously, it cleaned. electric cub motorcycles black smoke exhaust line procedure, if pieces of the "chug" sound and "blasting" sound, then the ignition late. If that happens, it is promptly corrected.