Positive Crankcase Ventilation—three dirty words, but do they really need to be perceived that way? In general, the PCV system has two main functions: vapor relief and liquid separation. PCV systems ...

Clogged crankcase ventilation systems often are overlooked causes of engine oil leaks. Savvy service personnel keep these systems at the top of their mental checklists for solving oil leaks. I'll ...

To most of us, emission control systems are some sort of "black art" devices that have been forced upon us to rob performance and ruin gas mileage, but that's really not the whole story. Air pollution ...

For Part I, covering the new combustion system, direct injection, and active fuel management: click here. For Part II, covering the valvetrain, exhaust, and cylinder heads: click here. Finishing what ...

Crankcase ventilation is almost provided in all automotive engines. Its prime job is to prevent the dilution of lubricating oil present in crankcase which may lead to corrosion of crankcase metals if ...

Driving along in my automobile, my baby beside me at the wheel… BEEP! What? A low oil light appears and creates an unexpected interruption of my cruising down the freeway. When driving a modified car, ...

On certain passenger vehicles, vapors from the Positive Crankcase Ventilation (PCV) system can condense and freeze inside of the throttle body when the vehicle is operated in cold ambient temperatures ...

These vehicles were built with incorrect child lock instruction labels. The incorrect labels could cause confusion as to whether the childproof safety lock was activated. On certain passenger vehicles ...

Clogged crankcase ventilation systems often are overlooked causes of engine oil leaks. Savvy service personnel keep these systems at the top of their mental checklists for solving oil leaks. I'll ...

If you have ever owned a VW or Audi and experienced the mystery of vanishing oil roughly 4,000 miles after an oil change then you know exactly what I’m talking about. While some cars have an indicator ...