I've been reading this forum for about a month now. I've tried just about everything on this site so far but my bike still won't work.
I have a 1979 xs400e (I think). All original everything. It was given to me after sitting for almost a year in the sun. I had ridden it and it ran great before it sat. I cleaned out all the crappy gas and changed the oil and battery. Put new spark plugs. Cleaned the oil screen and took the carbs apart and cleaned them well. I honestly have now cleaned them 7 times. Once boiled in vinegar. Compressed air blasted every bit. Checked every hole and needle. The diaphragms were in great shape. And nothing leaks. I readjusted the valves. Re-gapped the pionts. Set the timing, static and by light. Synced the carbs with a home made manometer(Gatorade bottles and blue water). I started it many times and it idled great but at 4000 rpm it collapsed and came back to idle.
I re checked everything. Someone blamed it on the float height. I had them both set at 27mm(brass floats) I tried to check those with hoses from the bowl and they were both below the seam by more than 3mm. I adjusted them as close as I could to 1mm and tried again. Now I can't touch the throttle without it stalling. Also now it seems to idle super low. I raised the idle a lot and it won't go over 1500 rpm. I'm about to re set the float heights to 27mm and try all over again.
I am extremely frustrated. Any help would be greatly appreciated.
I have a 1979 xs400e (I think). All original everything. It was given to me after sitting for almost a year in the sun. I had ridden it and it ran great before it sat. I cleaned out all the crappy gas and changed the oil and battery. Put new spark plugs. Cleaned the oil screen and took the carbs apart and cleaned them well. I honestly have now cleaned them 7 times. Once boiled in vinegar. Compressed air blasted every bit. Checked every hole and needle. The diaphragms were in great shape. And nothing leaks. I readjusted the valves. Re-gapped the pionts. Set the timing, static and by light. Synced the carbs with a home made manometer(Gatorade bottles and blue water). I started it many times and it idled great but at 4000 rpm it collapsed and came back to idle.
I re checked everything. Someone blamed it on the float height. I had them both set at 27mm(brass floats) I tried to check those with hoses from the bowl and they were both below the seam by more than 3mm. I adjusted them as close as I could to 1mm and tried again. Now I can't touch the throttle without it stalling. Also now it seems to idle super low. I raised the idle a lot and it won't go over 1500 rpm. I'm about to re set the float heights to 27mm and try all over again.
I am extremely frustrated. Any help would be greatly appreciated.