The process of assessing engine condition involves evaluating the amount of combustion gases escaping past the piston rings and into the crankcase. This leakage, indicative of wear or damage, can negatively impact engine performance and longevity. The procedures detailed below offer methods to identify excessive crankcase pressure resulting from this phenomenon.
Detecting abnormal levels of crankcase pressure is vital for preventative maintenance and avoiding potentially costly repairs. Early identification allows for addressing issues like worn piston rings or cylinder wall damage before they escalate. Historically, observing smoke emanating from the crankcase breather tube has been a common, albeit imprecise, indicator.