Black smoke fault repair

It was the image of the motorcycle carburetor likened stomach, digestion and absorption is good, good or bad depending on the stomach, black smoke is kind of the performance of indigestion, diarrhea, and people motorcycle engine parts almost (sometimes black smoke and ignition failure abnormal or valve leakage, excessive wear cam related article discussed only carburetor malfunction, not to mention other skip). Mainly due to the mixture is too thick, black smoke of vehicle gasoline consumption, often damaged spark plug, the sound muffled, speed weakness. Idle black smoke, fault phenomenon: When idling vehicle exhaust pipe smoke clear, exhaust motorcycle parts sound dull (sometimes wonder muffler damage), we must increase the throttle to start to start. Reasons for failure are: (a) pilot jet is too large; (2) float chamber oil is too high; (3) Start enriched valve is not closed; (4) with the gap needle and main jet hole is too large. Here is the solution: (1) replacing the smaller pilot jet. (2) adjust the float height, observed two-fifths of the oil level is normal oil level float chamber to the float chamber (note, open the lid when viewed under the oil level, the carburetor must be upright, to prevent the gasoline spread out, causing the oil level is not accurate judgment). (3) There are three start-enriched valve forms: manual plunger enriched valve, vacuum diaphragm plunger enriched valve, electric valve plunger enriched. Manual plunger valve repair enriched relatively simple, clean plunger through replacement return spring or cable solve the problem. Vacuum diaphragm check valve is mainly concentrated column Saiga vacuum, vacuum diaphragm rupture, leak. Electric plunger valve is usually enriched electrical heating element damage and power line failures, electrical heating element is damaged and must be replaced. (4) Oil needle and main jet holes with the gap is too large to be replaced standards for new accessories.