Thread: Surging Idle
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Targalid Targalid is offline
76 911S Targa
 
Join Date: Oct 2010
Location: Idaho
Posts: 1,150
Another possibility is that your mixture is too rich. At cold start this is OK but when the engine warms the extra fuel will cause your idle to hunt. Try adjusting the mixture if the search for air leaks is not productive. If you haven't done this before Calling911 has a great post on adjusting the CIS without gauges. It takes a long 3mm Allen wrench to do this. Harbor Freight has a complete set including the size you need with neat plastic handles that make adjustment a breeze. I keep the 3 mm Allen wrench right next to my American Express Card and I don't leave home without it. Actually I keep it in my tool kit and sometimes will stop by the side of the road to make a small adjustment. Once you get it set it stays in tune for quite a long time. After being parked for so long you likely have deposits in your fuel delivery system. A couple of bottles of Techron may help your problem.
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76 911S, 2.7, Bursch Thermal Reactor Replacements, Smog Pump Removed, Magnecors, Silicone Valve Cover Gaskets, 11 Blade Fan, Carrera Oil Cooler, Turbo Tie Rods.
Old 09-08-2011, 12:17 PM
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