240Z, 260Z, 280Z Performance / Technical Discussions related to performance motor enhancements, upgrades.

emission control

Old 08-17-2007, 12:55 PM
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emission control

'72 240Z su carbs: question for some knowledgeable soul=
What amI adjusting when I turn the Emission Control Adjusting Screw? ummmm, okay I'm adjusting the 'emissions'---right? How does this work--and what effect on 'performance'?
This might not be related, but it backfires lightly, usually when shifting from 1st to 2nd.
LW

ps: I know it says "don't touch", but I already have-----Thanks
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Old 08-21-2007, 06:25 PM
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Question Ecas

C'mon, guys. With the vast pool of experience, knowledge, talent & expertise out there; someone ought to be able to come up w/ SOMETHING -- even if it's
"just a theory" !
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Old 08-21-2007, 06:26 PM
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Old 08-21-2007, 08:25 PM
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I think it has

something to do with air. You are increasing or decreasing the amount of air back through the EGR valve or type of valve. Less air and you run rich, get backfires, too much air and you start to run lean and cook your rings/pistons. Just right and something about a baby bear will sleep in your bed...i dunno, i wasn't paying attention that day in school.
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Old 08-22-2007, 07:10 PM
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Thanks--Goffyz---I needed that!! lolhttps://www.zdriver.com/forums/images/smilies/039.gif
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