I don't know if you can created enough suction by mouth to move it. But if were leaking, you should have felt the air coming through the line.
I think you would have better luck borrowing or buying a hand held vacuum pump to test it.
I can't get the video to work with Windows Media Player so can't comment on it.
But the dist should turn then the throttle is opened.
Last edited by Roy Rodgers; 11/11/2012 9:05 AM.