(Weifang 4105 generator diesel engine fittings company Weifang mobile phone WeChat 13864600749) preheating method. By improving the diesel engine block, air intake and fuel temperature, reduce the oil level, the starting method to reduce the starting resistance. This method is more in the air temperature is lower, the start resistance of the diesel engine is difficult to start when the use of. If the diesel engine has a low temperature starting preheating device, you can preheat the 3-5min, improve the body temperature and then start. If there is no preheating device, can be used to heat the inlet pipe, torch and heating equipment exhaust pipe, oil pump and oil pan etc., so that the body, the air intake and fuel temperature, reduce oil viscosity, reduce the starting resistance to start the