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Old 11-09-2009, 10:17 AM
elmariachi elmariachi is offline
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Join Date: Jul 2008
Location: Driftwood, TX
Cobra Make, Engine: Contemporary Cobra, 427 side oiler
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Quote:
Originally Posted by Gunner View Post
I haven't touched them since backing them out a quarter. I think that puts them at around 1-1/8.
In my opinion, that is nowhere near enough. If it were me I'd:

1. Remove the carb and reconfirm the position of the transition slots. On a Demon, if you have to even slightly tinker with those to get your car to idle, you will introduce a bog or off-idle stumble. Use the Idle-Eze to get the idle right (as much as 2 turns out) and as a last resort use the secondary idle screw if needed, but don't touch the primary.

2. Roll the mixture screws out to 1.75 and go drive it. With the leaner primary jets you should be able to start at 1.75 and then begin backing down closer to 1.5 as a final. Forget the itty-bitty mixture adjustments, roll them way out and see if it makes any difference.

Have you replaced the plugs in this car since you started? Do they look like mine below or do they have a black soot ring on the thread base?


Last edited by elmariachi; 11-09-2009 at 10:26 AM..
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