The vacuum port that is supposed to go to the distributor advance unit is the one that has no vacuum at idle, but develops vacuum as you move the throttle off idle a bit. This is called "ported vacuum" and is taken from above the throttle butterfly. The other vacuum fitting has vacuum at idle, and is probably intended for the choke pull-off. If these are reversed the car will run poorly and have poor emission readings. Dick Benjamin -----Original Message----- From: mailing-list-owner@xxxxxxxxxxxxxxxx [mailto:mailing-list-owner@xxxxxxxxxxxxxxxx] On Behalf Of Klebert L. Hall Sent: Saturday, June 18, 2005 8:51 AM To: mailing-list@xxxxxxxxxxxxxxxx Subject: Re: IML: '69 emissions >From: "jsadowski" <jsadowski@xxxxxxx> >Subject: Re: IML: 69 Won't pass emmissions > >I did change the oil & filter 2 weeks ago. One thing I'm not sure of is on >the new carb, the instructions say to use one vacuum port for timed advance >or the other for untimed advance. Since the car has dead when I changed the >carb, I couldn't tell for sure which one is correct. >John If it's a new carb, then it sure isn't a secondary jet problem, like I suggested a minute ago. Try swapping the vacuum ports, what's the harm? -Kle. '69 Crown 4DHT ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm --- [This E-mail scanned for viruses by Declude Virus] --- [This E-mail scanned for viruses by Declude Virus] ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm