76 is indeed a Thermocrap. I'm pretty sure it's a vacuum secondary carb, but I have seen them open before while in park. Whether they are supposed to or not, I don't know. Brian Collinsworth wrote: >76... Thermoquad? >Is a thermoquad a vacuum secondary carb, or a mechanical secondary carb? >Reason for the question is, momentarily opening the throttle when not in >gear usually will not open the secondaries on vacuum sec carbs. It takes >more load to get the signal to open. >Brian >----- Original Message ----- >From: "James" <nyb@xxxxxxx> >To: <mailing-list@xxxxxxxxxxxxxxxx> >Sent: Saturday, May 03, 2003 6:17 PM >Subject: IML: Pop goes the carburettor > > > >