Andy, The answer to your question is "yes". The adapter plate you are describing is an air seal for the inlet manifold front section. DMC Joe Tech Information, DMC Joe Help Club, & Store "Summer Parts Sale" http://shopping.oraclesmallbusiness.com/dsvstore DeLorean Website Directory www.dmc.tv ----- Original Message ----- From: <Soma576@xxxx> To: <dmcnews@xxxxxxxxxxxxxxx> Sent: Tuesday, May 07, 2002 8:06 PM Subject: [DML] vacuum leak? > Hey all, > > today i was tinkering with my car and i noticed something odd. you know that > plate that sits on the W-pipe on the intake manifold? there are two bolts > that hold it down to the manifold with a paper gasket between them. one on > of the bolts there is a wire harness clip holding the engine wiring. anyway, > i noticed that i was missing a bolt in it, probably from this winter when i > put my new waterpump in. i have some extra hardware around so i put a bolt > and washer in it, and started the car. it seems to run a little smoother, or > maybe it's just my imagination. > > would this plate being loose or missing a bolt cause a vacuum leak? i don't > remember what is under the plate from this winter. perhaps this is another > place where people should look when they have a rough idle.... > > Andy > > Soma576@xxxx > 1982 DeLorean DMC-12 VIN#11596 > Fargo, ND 58102