Mailing List flyrotary@lancaironline.net Message #43983
From: John Downing <downing.j@sbcglobal.net>
Subject: Manifold vacuum gauge
Date: Sun, 21 Sep 2008 20:19:11 -0400
To: flyrotary <flyrotary@lancaironline.net>
Today I sorted out the wiring and everything is now working.  The only problem is that the manifold vacuum gauge is reading backwards.  I tried changing the plus-minus wires around on the back of the gauge and it reads nothing, even with vacuum applied.  The question is what happens if I switch the power and ground wires around, does that do anything besides blow the fuse or the gauge.  Will run the engine again tomorrow with the ole steam gauge and try and get a start on the EC2 tuning. 
 
 One other question, does the vacuum lines to the EC2 need some kind of pulse chamber, like a small fuel filter or orifice in each line.  JohnD
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