In the car, smell can help you identify the love car "hair neck". A car consists of tens of thousands of parts, each part is very small in the normal condition of the work, but once a part of the parts of the abnormal wear or consumption, it will send out some odor, so, in the car, you may wish to use a nose, and when you recognize the "hair neck". Burnt paste, if the inside of the car comes from the paste of plastic products, it is mostly caused by overheating of the electrical circuit. But the burning of electric wires is usually accompanied by local smoke or local fever. Careful inspection can definitely find the source. If the special odour of non-metallic materials is smelled during the running process, the clutch friction disc usually burns or overheat. If the clutch is used normally, there is no obvious difficulty in hanging or starting difficulties, and the smell of the car does not smell from the front of the car, but the rear of the car, then check whether the rear brake system is overheated. The smell of mixed oil must be careful. Because the ignition point of engine oil is different from gasoline, it is abnormal that we call it "blue smoke" phenomenon. In addition, engines with severe valve wear are also likely to burn oil. Some of the oil pipes of the vehicle also have an aging leakage and may also drop the oil into the engine or the exhaust pipe, when the smell of oil that emanates may cause a fire. The car should be sent to the maintenance shop for inspection immediately. If the oil smell can always be smells of unburned gasoline, it is commonly known as "oil raw". It is necessary to make the first time to confirm the location and severity of the oil leaking to get on the road again. After the vehicle is used for a long time, the oil pipeline is likely to suffer from aging and cracking. As long as a little bump or pressure changes in the pipeline, the fuel can leak out of these parts. So when you smell the unusual smell of gasoline, you should immediately extinguish the cigarettes and other bright fires in the car. In addition, if the tank has been hit by an accidental impact, it is possible to leak unburned gasoline and plug the chewing gum in the oil spill.