DNT engine repair tool
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- Issue Time
- Jun 17,2025
Summary
Cylinder scuffing can severely impact engine performance. Causes include poor break-in, improper clearances, overheating, poor filtration, and injector or cooling failures. DNT engine repair tools help ensure safe, efficient disassembly and reduce secondary damage, offering high performance, ease of use, and great value for professional engine maintenance.
The so-called cylinder scuffing refers to the appearance of grooves of different depths on the inner wall of the cylinder sleeve along the direction of piston movement, which affects the sealing of the cylinder. The following DNT engine repair tool will analyze the causes of cylinder scuffing for you.

①Poor use during the running-in period
②The clearance between the piston and the cylinder is too small
③The clearance between the piston ring is too small
④After starting the vehicle at low temperature, the accelerator is slammed to increase the temperature
⑤Overheating occurs during the working process
⑥The "three filters" do not work well
⑦The nozzle for cooling the piston is faulty, the piston is not cooled enough, and the expansion causes the cylinder sleeve to be damaged
⑧Long-term idling causes the oil on the cylinder wall to be washed away
⑨The fuel injector has long-term poor atomization, and a large amount of diesel fine mist dilutes the oil film on the cylinder wall and causes cylinder scuffing
⑩Severe lack of coolant and too high water temperature.
When disassembling the engine, you should also pay attention to the use of disassembly tools. Using engine repair tools can not only improve the efficiency of engine disassembly, but also greatly reduce the secondary damage to the engine. DNT is a manufacturer of engine repair tools with the characteristics of simple operation, high maintenance efficiency, and high cost performance. It is your considerate engine repair tool manufacturer.
Cylinder Liner Puller
This tool is designed to quickly remove cylinder liner and
reduce damage to the cylinder in the process.
It is a great helper for auto repair shop, garage, car maintenance
Material: carbon steel
