Is it an overhaul to replace the crankshaft with an engine?

Engine crankshaft replacement is overhaul. The following is an introduction about engine overhaul: 1. Brief introduction: The key of overhaul of automobile engine includes replacing valve, piston, cylinder liner, boring cylinder and grinding shaft. According to the standards of most 4S shops, it is basically necessary to replace 4 sets, namely, piston ring, valve divider, valve oil seal, valve guide, crankshaft bearing and connecting rod bearing. 2. Maintenance precautions: (1) There are many reasons for removing the sludge at the throttle. Some exhaust gases from fuel combustion form carbon deposits in the throttle; Then, impurities that are not filtered by the air cleaner will remain on the throttle. When there is too much sludge, the air intake will produce air resistance, which will lead to an increase in fuel consumption. (2) Clean the carbon deposit on the fuel nozzle, because the combustion chamber is easy to produce carbon deposit, which will lead to difficulties in starting; Carbon deposition in the fuel nozzle will also lead to oil blockage, gasoline injection deformation, poor atomization, and fuel consumption will naturally increase.