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Vacuum leaks and idle
Well I found many vacuum leaks and fixed them all I think. Right now I'm trying to adjust my base idle. While adjusting I keep getting this annoying small backfire pop. Also when I bridge the A and C in the test area the idle with the jumper is higher than when I take out the wire. When I turn the air idle screw in or turn out, not a lot seems to happen. Also I notice the adjusting screw does not bottom out. So I understand that you turn the screw until both idles with test wires in and out, the idle should be the same. Thoughts please on the little backfire pops? Thanks
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03-26-2018, 01:11 PM
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Join Date: Jun 2013
Location: Park Ridge, IL
Posts: 1,240
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Bridge pins B & C.
Idle air screw should bottom out. Can you remove it and inspect? It may have some kind of anti-tamper head which is preventing it from turning. Good luck, Dave
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Dave McKenzie 1984 Carrera 3.2 1984 928S Automatic 2001 996TT |
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03-26-2018, 01:18 PM
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Well I turned it a lot. I’ll check if it bottoms out. Min does not have a screw head. Mine is a little hex nut head that I adjust with a socket wrench
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03-26-2018, 03:03 PM
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Join Date: Oct 2008
Location: Nash County, NC.
Posts: 8,500
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On the SCs you need to disconnect the ox sensor to adjust
You might try that on Carrera if you have problem that idle won’t correct. Bruce |
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03-26-2018, 03:05 PM
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Porsche 911 Carrera
