Avoid oil leakage If the diesel leaks 10 drops per minute, 1200 grams will be missed overnight. When disassembling the tubing connector, the operator should keep the original mating surface of the copper gasket and other parts as much as possible, which can effectively prevent leakage. After many times of disassembling, the copper gasket will become hard or have uneven surface and cause leakage. If it becomes hard, the copper gasket can be put into water immediately after it is burned red, so that the copper gasket will become soft; if it is not flat, you should try to flatten or level it. In addition, after the iron sheet cover has been disassembled several times, bending deformation tends to cause leakage. When repairing, the cap should be leveled with a hammer and then installed, with flat washers and spring washers under the bolts. Determining that the economical speed is close to the lowest point of the fuel consumption rate curve in diesel engine speed characteristics is also a condition for low fuel consumption of diesel engines. This is particularly evident for diesel engines equipped with dual speed governors. This is the economic speed of vehicles. . In general, economic speed is close to medium speed. When fuel economy modification of diesel engines is performed, the air pressure in the crankcase is often higher than the outside atmospheric pressure, causing the oil in the crankcase to leak outward, or snaking up to the combustion chamber, causing wasted oil. This phenomenon is particularly prominent in single-cylinder diesel engines. The addition of a negative pressure valve on a single cylinder diesel engine reduces the leakage of oil and burns. Can save about 20% of oil. Supporting new types of agricultural machinery such as the Shanghai-504 tractor supporting suspension 1l-425 type four-plow ploughing paddy field or green fertilizer field, working efficiency of 0.20-0.27hm2/h, fuel consumption rate of about 6kg/h, and supporting the use of 1lyq- 722 light disc plough can be used slowly ii, iii file operation, work efficiency can be increased to 0.47-0.60hm2 / h, fuel consumption is about 8kg / h, compared to about 50% of fuel. Selecting a new type of diesel engine such as a direct injection diesel engine is more economical than a conventional vortex chamber diesel engine. The use of metal cleaners in the maintenance of diesel engines, the use of metal cleaners instead of diesel to clean parts is also an important fuel-saving technology, but the three precision parts should not use metal cleaning agent cleaning.