LANCER wrote on 12/31/69 at 16:00:10:OK, so it runs again after sitting for a while.
Starts, runs, dies, wet & black plug, sucking muffler, blowing carb.
What causes both valves to remain open at the same time after it gets warm?
This makes me think about what Ed said ... but you said you adjusted and then readjusted the valves.....did the valves readjust themselves again after running? Loose valve adjusting nuts?
IF THAT IS NOT IT THEN YOUR ENGINE IS DEMONIZED !
Okay...I got sidetracked in the afternoon and didn't finish looking. On Saturday, I did change the needle spacer and readjust the valves. Then the bike ran normally all day on Sunday. Must have had a dozen starts.
There were however a couple times that the engine seemed a little sluggish BUT I kinda thought it was due to the chain conversion. But as long as it ran, I didn't think about it much.
For everyone, here is an interesting bit of thought...
When Julie came home last night and I discussed the bike problem, she said, "Oh yeah, I meant to mention that when I was following you, that there were a few times that I smelled gas."
DOH!