This is on the 81/82 CB650 engine I picked up.
The little tubes that come up from between carbs 1 & 2, and 3 @ 4. I would imagine that they go into the little box or pipe that connects to the crank case vent then to the airbox, but not sure. I paid $70 for these tubes, so they damn well better be useful for something. They're plugged because gas poured out of them before. Have tried running with them unplugged too, makes no difference.
This POS engine won't run either. Dipped and cleaned carbs till they squeaked. Will still piss gas out of all 4 carbs even though the floats and float valves are like new (had apart more than once). Vacuum valve works perfectly too. Still will not start and I've wasted 2 days of my long weekend on it. Has great spark. Tried a few different spots for ignition timing. Valve clearances are set as per the manual. Will get a few fires from here and there, but nothing real great. Backfires out the exhaust and carbs randomly as well. Any ideas anyone?
The little tubes that come up from between carbs 1 & 2, and 3 @ 4. I would imagine that they go into the little box or pipe that connects to the crank case vent then to the airbox, but not sure. I paid $70 for these tubes, so they damn well better be useful for something. They're plugged because gas poured out of them before. Have tried running with them unplugged too, makes no difference.

This POS engine won't run either. Dipped and cleaned carbs till they squeaked. Will still piss gas out of all 4 carbs even though the floats and float valves are like new (had apart more than once). Vacuum valve works perfectly too. Still will not start and I've wasted 2 days of my long weekend on it. Has great spark. Tried a few different spots for ignition timing. Valve clearances are set as per the manual. Will get a few fires from here and there, but nothing real great. Backfires out the exhaust and carbs randomly as well. Any ideas anyone?
