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#1
07-24-2021, 01:59 PM
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Carb AFR issue.
Hi All,
I'm loosing my mind on this one. I am using a 78 vintage 800 cfm Quadrajet on my 67 FB with a 400. At idle I'm running around 13.2 AFR which is fine. As soon as I place the base of the air filter on (it's a RA setup), the AFR jumps to 14.2 - 14.4 and runs rough. I lift the pan of and it goes back to 13.2 The pan is not interfering with anything, the carb is not loose, its a JET stage 2. This can't be normal. Otherwise the car runs great. Any help would be greatly appreciated  .
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