u/Memeric_86

My 1980 Honda CB650 is very difficult to start and I don’t know why. The carbs have been cleaned and synchronized. I installed new intake boots. There are no vacuum leaks. I adjusted the valves. Checked every single connection for my ignition system. Still no luck. I have to turn the engine over for a couple minutes before it actually runs. Then after about 10 minutes of heating up it runs super great and I can drive it perfectly fine. I just can’t seem to understand why it’s such a battle to get it running. It’s very discouraging and I’m running out of hope. For reference, in the video the bike had been warming up for a few minutes and as soon as I gave it a tiny bit of throttle it died immediately. Does anyone have any idea what’s causing the problem? Thanks in advance