All engines need some sort of crankcase pressure relief. Whether it's in the form of a simple breather, or a more effective PCV system, you need a way to vent blowby gases inherently generated by a ...

Venting a typical V-8 engine isn't a complex affair. A breather atop each valve cover is usually all that's needed. Of course, replacing one with a PCV valve to introduce a bit of vacuum into the ...

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The PCV valve (positive crankcase ventilation valve) is a vital part of the emissions controlsystem on most vehicles. Not every vehicle has a PCV valve, but most do. If yours has one, and if your ...

Although some maintenance schedules include an interval for replacing the positive crankcase ventilation, or PCV, valve, others may not. In the latter case, a general recommendation is to replace the ...

Zak is new to the CarBuzz team, working as a freelance content writer. When Zak isn't writing How To articles for CarBuzz he's working as a high school automotive technology instructor. Before ...

The Chevrolet small-block engine was a brilliant piece of engineering, attested by the fact that well over 100,000,000 have been built. However the first generation was not as oil-tight as later ...

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