Least you had the sense to do a brake/clutch dump to stall it.
Most common leak areas are carb boot/reed cage, crank seals, cylinder base/head gasket.
A plugged main jet could do that, but not likely something that big would get through tank filter.
I use one of these :http://www.harborfreight.com/cylinder-leak-down-tester-94190.html
PVC cap for intake , expansion plug or solid rubber gasket for ex.
either drill hole in cap and thread in or use spark plug hole.
Do you know if the head and cylinder were re-torqued after coulple heat cycles after rebuild?
If not, odds are you have a leaky gasket.
Most common leak areas are carb boot/reed cage, crank seals, cylinder base/head gasket.
A plugged main jet could do that, but not likely something that big would get through tank filter.
I use one of these :http://www.harborfreight.com/cylinder-leak-down-tester-94190.html
PVC cap for intake , expansion plug or solid rubber gasket for ex.
either drill hole in cap and thread in or use spark plug hole.
Do you know if the head and cylinder were re-torqued after coulple heat cycles after rebuild?
If not, odds are you have a leaky gasket.