Please post the compression test when you have it. I did mine recently and it was only 125 which I cannot believe. Mind you it's difficult to get the adapter into the spark plug socket on this bike so I'm hoping it wasn't sealing properly.
DragBikeMike wrote on 03/25/18 at 12:46:55:
We had lots of trouble with the little sprint 350.
That's the aermachhi single yeah? I had a '73 model with the red white and blue stripes on a black tank.