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Registered
Join Date: Oct 2002
Location: Lexington, Kentucky
Posts: 5
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Advice on Idle Setting
Need some help. 76 911 S 2.7 (CIS) - Wanting to increase my idle a bit, and my idle screw doesn't have any effect. Can turn it all the way left and all the way right, and it doesn't alter the idle a bit?
I'm also playing with the fuel mixture (which does have an effect)? Getting some dropping idle, and some popping/sputtering. Any advice? Thanks! |
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07-28-2004, 06:16 AM
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Registered
Join Date: Feb 2002
Posts: 344
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1. Richness must be set correctly. Sounds like you're lean. I always use CO gauge (but I've had members say they do it by smell!)
2. Are you sure it's the idle screw you're turning? 3. If 2 then, you're no getting enough air flow, most things, AAR failure or air leak, cause high idle. |
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07-28-2004, 08:25 AM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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If you don't have a gauge, you can try setting your CO by pushing up on the air flow sensor plate, once the engine is warm and running. If the revs rise, you can go richer. Then pull down on the plate. If the revs rise, you can go leaner. If you push up and pull down and both times your revs fall, then you are good. Then you can set the idle.
If you still get no change, then the air leaks or faulty AAR Hladun mentions may be the problem.
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone |
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07-28-2004, 08:59 AM
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