Blow by

**Blow by**

“Blow by” refers to the phenomenon where combustion gases escape past the piston rings into the crankcase during engine operation. This can affect engine performance, cause increased oil contamination, and lead to pressure buildup inside the crankcase. Understanding “blow by” is essential for diagnosing engine wear and maintaining optimal performance in vehicles and machinery. Use this tag for posts related to engine mechanics, maintenance tips, and troubleshooting blow by issues.