Pelican Parts Forums - CIS Problems - Test Gauge recommendations

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- - CIS Problems - Test Gauge recommendations - 1980sc running rough (http://forums.pelicanparts.com/porsche-911-technical-forum/763325-cis-problems-test-gauge-recommendations-1980sc-running-rough.html)

I guess if you have an 80 there should be no vent. Is there a vent? I see something there.

Quote:

Originally Posted by Bob Kontak (Post 7580817)

I guess if you have an 80 there should be no vent. Is there a vent? I see something there.

Yes there is a vent with a hose that has a silver colored clamp behind the electrical plug.
Can this be a problem ? Should I cap the vent ?
http://forums.pelicanparts.com/uploa...1375402158.jpg

Pull the unit and get the number. Mirror?

Quote:

Originally Posted by nicfranc (Post 7580800)

I can't see the number on my 1980 WUR but it appears it might be the wrong one.

http://forums.pelicanparts.com/uploa...1375400093.jpg
http://forums.pelicanparts.com/uploa...1375400112.jpg

nicfranc,

The pictures you posted with the different WUR's show the wrong WUR for '80 SC. The correct WUR for '80 SC (US) is 0-438-140-072. This particular WUR has no vacuum port but has a port to atmosphere. Take a look at this:

http://forums.pelicanparts.com/uploa...1375418386.jpg
Sorry, picture too small for good viewing. Picture taken from Special-T auto website.

I have a few of these WUR's that I've been calibrating for a member living in Europe. Those pictures need some editing to show the correct WUR for '80 SC. BTW, the hose from the WUR's vent should be connected to the throttle body. Where is the other end of the hose connected now?

Tony