Good evening fellow cobra enthusiasts.... I need some guidance..
I have procured 2 different motorcraft 4300 carbs, both remanufactured from Holley.. Neither of them has been able to be dialed in lean enough to pass smog. Is this a crap shoot to get one that works or is there something I can do to assist them in achieving the right AF ratio. My mechanic friend told me today to just keep returning them as only 1 in 4 usually good but what a PIA...