Started my 2000 Lincoln LS v8, and a loud bang with brief smoke appeared from under the hood. There is now a sucking sound and inconsistent RPM's. Searching for what I believe is a vacuum leak, I have found what I believe is the issue. A black hard plastic cap/disk about 4 1/4 in diameter located on what I believe is part of the Intake manifold, between the firewall and engine is now no longer connected. The disk has a short center stem attached to it and looks as though it was held in place by a epoxy. If this is the issue, I'm unclear how to fix, if I can myself. And if it is some sort of cap designed to blow off because of too much pressure, is there an underlining issue that if I repair the cap it will just blow off again? Thank you for your time.
Monday, December 10th, 2012 AT 2:52 PM