Originally Posted by never monday
read all of the original post......He has to close the gate valve and raw water after shutting the engine
down to prevent water coming in). This last time, they had an issue and forgot to close the valves which stayed open overnight - flooded the next morning.
AH!...I did miss that Thanks NM...But that doesn't help me too much...Well maybe a tad...in that if,
it is a gear
driven pump, (OP can you please tell us that?) and its below water level the constant head
pressure on failed seals
would do it...but I would still think it would get water past those seals
while it was running as well, not when just stopped..I have seen funny
things like that happen though so you could be right.
If it is indeed comming through the exhaust
, the lack of hydraulic lock still has me stumped though....I cant wait for this one to show itself..