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1999 Buick Park Avenue Question: REPLACING PLENUM AND PLENUM GASKET

 

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99buick, 3.8L V6, Thiensville, WI, March 20, 2011, 16:17
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When the lower intake gasket is replaced do I have to replace the plenum as well and also the plenum gasket?

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  • Answer #1

    March 20, 2011, 16:27
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     Master

    Definitely replace all of the gaskets, but only replace either the upper and/or lower manifold or plenum if they are defective, such as cracked, leaking, warped, EGR system damaged etc.

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