Question about 2004 Chevrolet Aveo

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We change the spark plug of my aveo 2004, and we found out that there is a oil leak on the third cylinder, what may cause the problem?

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The valve cover has rubber o-ring seals that fit into the valve cover and seal oil out of the spark plug wells. Over time, they get hard and shrink, allowing oil to enter the plug wells from the top of the engine. You need to remove the valve cover and replace the valve cover gasket and o-ring seals. The seals should come with the valve cover gasket set.

Hope this helps,
Dave

Posted on Jul 03, 2010

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