Black smoke fault maintenance

It was vividly likened 110cc cub motorcycle carburetor stomach, digestion and absorption is good, good or bad depends on the stomach, the black smoke is a kind of performance of indigestion, and diarrhea almost human (and sometimes smoky failure normal ignition or valve leakage, cam wear too much about the paper only looks carburetor malfunction, not to mention other skip). Mainly due to the mixture is too thick, black smoke vehicle gasoline consumption, often damaged spark plug, the sound muffled, speed weakness. Symptom idle smoke appears as follows: When idling vehicle exhaust pipe smoke clear, exhaust sound boring (and sometimes even suspect the muffler is damaged), we must increase wave110 cub motorcycle engine startup to start. Cause: (1) pilot jet is too large; 2) float chamber oil level is too high; (3) Start enriched valve is not closed; (4) with the gap with the main nozzle needle hole too large. Here is the solution: (1) Replace smaller idling jet. (2) Adjust the float height is observed at 2/5 normal oil level float chamber oil level 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, resulting in inaccurate determine the oil level). (3) Start enriched valve There are three forms: manual plunger enriched valves, vacuum diaphragm plunger enriched valve, electric valve plunger enriched. Concentrated manual plunger valve repair is relatively simple, it can be cleaned plunger, replace the spring or pull solve return problems. Vacuum diaphragm check valve is mainly concentrated Saiga column vacuum, vacuum diaphragm rupture, leak. Electric plunger valve is generally enriched electric heating element damage and power line failure, electric heating element is damaged and must be replaced. (4) The needle and main jet hole with too much space should be replaced with new standard accessories.