valve train

A valvetrain is a mechanical system that controls the operation of the intake and exhaust valves in an internal combustion engine. The intake valves control the flow of air/fuel mixture (or air alone for direct-injected engines) into the combustion chamber, while the exhaust valves control the flow of spent exhaust gases out of the combustion chamber once combustion is completed.

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    Engine Valve train "gunk"

    1983 CJ7 4.2 L inline 6 I would appreciate some advice. I want to address my leaking valve cover (gasket), so I removed the cover and found that the entire valve train is filthy with a thick gunk (see pictures). #1. Does that mean the oil pump is not lubricating this area well enough? #2. What...
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