What vehicle system is the upper plenum related to? And what causes damage to it?
Wednesday, February 27th, 2013 AT 3:52 AM
1 Reply
BLUELIGHTNIN6
MECHANIC
16,542 POSTS
Greetings
The upper plenum refers to the upper air intake manifold. Water and rust can damage the intake manifold. You can also have a manifold gasket that has gone bad and started leaking.