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On 9 Aug 2003 at 7:37, Mark Seaton wrote: > From: "Jim Adney" <jadney@vwtype3.org > > The only way to check for actual vacuum would be to > monitor it on the road. > > Hi Jim, well I'm not sure how I would do that. I will try diconnecting it > today and see if it makes a noticeable difference. The can holds vac and > moves the advance plate, and the pipe is good and the vac takeoff is where > it should be so it should all work OK. Get a small Tee, a vacuum gauge, and a length of vacuum or windshield washer hose. Plumb it all up and run the hose outside the car and in the passenger window. Set the gauge so you can see it while you drive. The extra volume may make a very small difference in transient response, but it won't have any effect on steady state driving. Here's what you should see: At idle and while accelerating: little or no vacuum. While crusing (level ground, no acceleration): some vacuum, up to about 200mmHg. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org