My 2F engine isn't sounding too good and gave some bad compression results.
Cylinder |
DRY |
WET |
1 |
130 |
135 |
2 |
85 |
85 |
3 |
125 |
125 |
4 |
120 |
125 |
5 |
130 |
130 |
6 |
120 |
120 |
As you can see, the numbers are low, and not much change with adding oil. Need to further investigate.
This is a home made adapter which allowed me to hook the air compressor up to the spark plug hole thread.
Forcing compressed air through the spark plug hole in cylinder #2 (piston at TDC) indicated that the exhaust valve was leaking. This is known as a leak down test.