Topic: cylinder 3 not drawing fuel in to cylinder?

[75 super sport]

I was not able to check compression, the tester we had did not have the right adapter. A little update tho, at first cylinder three will fire and run good, then it immediately fouls the plug and starts not firing. I got a jet kit from 6sigma. They gavee 125 mains for outer two cylinders and 127.5 mains for the inner two cylinders. #2 and #3 are both running wayyy to rich. #2 seems to keep firing but #3 stops. O think what we have is just a fuel issue that I need to sort out. I will try to pick up another set of 125 mains and see if that helps the issue.

[calj737]

You need to make sure the fuel level is correct, regardless of the jet sizes. Use the "clear tube" method and correctly adjust that. Then, once the bike is running, tune the carbs with jetting changes.

I don't know your supplier, but be dead certain to only use Keihin brand brass in these carbs. Aftermarket jets and needles (especially) are prone to create tuning issues as they differ from stock.