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On 8 Sep 2006 at 20:57, Arkady Mirvis wrote: > My 72' Squareback (fuel injected) idles at 600 RPM and refuses setting > of recommended for automatics 1000 RPM idle. I am turning the > adjustment screw on the air distribution box with warmed up engine not > responding. Experts - listees, what is the problem? > This shall be the first step in engine tuning, so I am stuck. Thanks in > advance. You're following the Bentley manual, right? That's the only manual that gets the '72 FI tuneup proceedure right. So that means that you're timing to 5 deg BTDC (third mark from the left, on a '72.) If that's all right, then suspect the idle air passage as Dave said, or we could wonder if something else was wrong. It's often hard to get the idle speed DOWN, but I've never had trouble getting it UP. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~