避免活塞“敲缸、拉缸”的有效途径汽车发动机大修后，往往由于活塞的性能不良或活塞与缸壁间隙选配不当等原因，出现轻微“敲缸”，有时甚至“拉缸”。怎样才能避免这种不正常的现象呢？笔者在多年的修理实践中的体会是，除严格执行有关的修理技术标准外，还必须注意以下... Avoid piston “Knocking cylinder, cylinder” effective way Car engine overhauls, often due to poor performance piston or piston and cylinder wall gap improper selection and other reasons, there was a slight “knock cylinder” and sometimes even “pull the cylinder.” How can we avoid this abnormal phenomenon? The author in many years of practice experience is that, in addition to strictly enforce the relevant technical standards for repairs, but also must pay attention to the following ...