Reading your latest post reminds me strongly of my experiences with the stock 450 carbs when I was trying to get them right and kept adjusting jetting and fiddling and was having issues with surging at low throttle positions, and generally just not running right. I also had some symptoms like you describe although it was more like the carb was spitting rather than clicking, but we're talking a number of years ago here.
In the end, I discovered both diaphragms had minute tears in some creases that I figured out had been there for a while and I'd just not looked close enough to see them.
Tears in the diaphragms will interfere with the ability of the vacuum to life the slides, so they're going to give you inconsistencies, and my limited experience tells me you'll notice them more at idle and low throttle positions.
My solution was putting some GS500 carbs on as they're a bolt on replacement and are lighter, and most definitely were cheaper than replacing the slides and diaphragms. You won't be able to run the stock airbox though and will need to figure something out there. My choice was velocity stacks with a foam filter over the top.
Comment