Originally Posted by compress ignite

There is a possibility that your "Vacuum Operated" stop pod's lever is incorrectly
attached to the "Stop Lever's" actuation rod inside the I.P.(Or Vice Versa)
Thereby preventing it(The Emergency Stop Lever) from being able to COMPLETELY shut off fuel flow.
There is also the possibility of "Run Away Diesel" (Where you get to watch,
from a safe distance [say 50 yards] as your engine spools up,beyond design
specifications,and begins to launch rods through the sides of the Block along
with Pistons through the Hood.)