I spent a lot of time rebuilding my carbs on my Green I/S when I got it, I also added a filter and an electric valve and disabled the vacuum petcock. Problems solved... Right? Well I put it on the lift to do a list of things that still needed to be added and or maintained. So there she sat, for months. So yesterday I decided I'd better fire it up and let it run for a bit. Surprise! It was too late. It wouldn't start, when I did get it started it would only idle on full choke any throttle and it would die. I was mortified that I may have to do this all over again. I drained the carbs and the fuel looked Ok but it was running right. After a while it would run on the throttle without the choke but it wasn't running very well. I stopped and got some Techron and ran it for a while, on the lift. No joy, it still had one cyl that was dead.
Here is where I get creative.
I drained the offending carb's bowl, put a line on its drain and blew compressed air up through it. I could hear air come out the air box but it didn't help the problem. So plan B went into effect. I closed the drain and started the bike, locked the throttle at about 2K rpm. While it was running with the bowl full of fuel I pressurized the hose going to the bowl and cracked the drain open. Viola!! The bike bogged down from the extra fuel, but cleared up fast and now it runs fine!! I could picture the sprinkler going on inside the carb in my mind, the added restriction of the fuel made the pressure more likely to clear all the passages instead of taking the path of least resistance.
I'm so happy I didn't have to tear it down again.
