i was having problems with my number 3 cylinder not firing, so i took that carb off, took it apart, cleaned it, pretuned it, and reattached it. then i set in to syncing the carbs. they were both dialed in perfectly. everything was working great with the exception of the constant popping sound that came every time i took my foot off the gas. the car would constantly pop anytime the engine was idling down. in idle, it sounded just fine. i was running an unbaffled stinger at the time. no matter how much tweaking (leaning it or running rich) i did with the carbs, i could never get rid of that popping. i eventually got it to stop the popping whenever i would blip the linkage bar, but when i got in to take it for a spin to the end of the street and back, it died as soon as the engine was under load. by that time, i was frustrated to the point that i felt like taking a hammer and smashing my engine to bits. after i walked around for a bit and took a break, when i came back, i decided the carbs were totally out of sync, so i pulled them both and set both of them back to the pretune settings. also, while stomping around in my garage, my baffle fell off a shelf and landed almost directly in front of me, like a message from the beetle gods. for grins and giggles, i re-installed the baffle. this go round, the car started and after some tweaking, i got the carbs back in sync. now, it will only lightly pop once during hard acceleration and only between 1st and 2nd. WTF? i don't understand what difference that baffle made. do carbs need a little back pressure to work better? or is it that with back pressure the carbs are a little more forgiving?
72 Super Beetle