Replacing a Leaking Valve Cover Gasket on an Acura TL or Honda Accord V6 (With Video)
The article, via video, will show you how to address and fix oil leakage from hardened and dry-rotted valve cover gaskets on Honda V6 engines.
Over time, the valve cover gaskets on Honda's V6 engine lose their sealing properties. As a result, engine oil will seep and leak around the perimeter of the gaskets. These gaskets will harden and become brittle, almost like plastic; bending an old gasket like this that's been remove will make it break. Sometimes the gaskets get so hard they cannot be removed from the valve cover gasket grooves unless pried and chiseled out.
The valve cover applies pressure on to the gasket with valve cover bolts cushioned with thick rubber washers or bushings. These bushings also lose their elasticity and harden, so they need to be replaced along with the valve cover gasket.
Although gaskets can be purchased for each cylinder head (two cylinder heads for V6 engines), I recommend you purchase a kit that comes with a pair of replacement gaskets with new cover bolt washers, and in some kits, the spark plug tube seals.
To get working clearance to these gaskets require removal of the engine's intake plenum. This requires the removal of the air hose, electrical connectors, vacuum lines and some coolant hoses. The ignition coil packs can then be removed before unbolting the valve cover.
Video: Honda V6 Valve Cover Gasket Removal and Replacement
This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.
© 2020 hardlymoving