9.9 yamaha wont pump water tryed everything

[mattddbz29]

all lines are clear on this 9.9. We just purchased the boat, and it would not pump, initially thought impeller issue but upon inspection, it was fine. we replaced it anyways. It will not pump. All lines are clear and blown out. We have got it to pump by cracking the seal on the leg?? any ideas ?

[boats.net]

Don't know what you mean by cracking seal on leg but it needs to be in water deep enough to completely submerge water pump and not running on a flusher. If still having problems make water housing is not distorted and check thermostat.