Water leaking into the bilge at rear of the engine

UPDATE. Got the boat back and all the guy could find was one of the 3 drive shaft O rings had a piece of rubber shaved off of it. He said that he could not really find any signs of water in the bellows and the bearings all looked and felt good. said that the bellows and bearings did not need to be changed. He did go into the engine bay and saw where water had been collecting on the Y pipe because he found a bit of surface rust starting to form. He said that water coming in from the drive rod would pool there and makes sense that the water is coming from the O ring. This would be the best news if it was really the problem as it only cost me 125.00 for the repair. Can anyone chime in and confirm if one of the three O rings being bad could let the drive shaft leak?
 
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Not that I could think of....

The Bravo 3 installation seal kit has an "L" shaped gasket that seals the raw water inlet. If that leaked, the raw water pump would draw air once the boat was moving fast enough to allow the top of the outdrive to be exposed. If this gasket was leaking, I don't see how it could allow water to leak into the boat.

The O-ring around the shift cable connection, if that leaked, water could possibly get into the drive??? But not directly into the boat. Not a good thing, but still don't see how this could cause your issue.

There is a small O-ring that seals the remote oil reservoir spring loaded connection. If that leaked, water could mix with the gear oil. Not a good thing, but I don't see how this could cause the water leak that you are describing.

The 3 O-rings on the drive shaft.........there shouldn't be any water around the driveshaft.
 
My thought is steering pin assembly as well. That drip looks all too familiar.. Had same issue with a previous boat. Turned out to be bad seal. Was so corroded a new seal wouldn't stay in place.
Only gets worse, not a fun way to start the season. Best of luck.
 
My thought is steering pin assembly as well. That drip looks all too familiar.. Had same issue with a previous boat. Turned out to be bad seal. Was so corroded a new seal wouldn't stay in place.
Only gets worse, not a fun way to start the season. Best of luck.
Would that have been something that would have been seen with the drive off? How would I verify if this is the cause?
 
New information. I took this video today and could only find one place that shows signs of water intrusion. The video below will show the place I found. It is the lower bolt on the starboard side of the gamble mounting bracket. I can't tell if water is coming in through the area where those tubes are exiting through the transom. The lower pic is a shot of the steering arm that doesn't look like it would be the problem. The dirt may be from a dirt dobber nest that I broke up last year. I don't know why it got turned sideways???
IMG_0306.JPG
 
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Not many places for water to enter but having the boat in the water for the first video would be helpfull to see any leaks.The steering arm leaking would only show up is it is underwater,you may have to put some people at the stern to lower it a bit. Should it leak there, the seal is bad and needs replacing due to not having the grease fitting there. It is easily re-installed though.
Below that is the Y pipe. That will leak in the water with the motor running or not, again easily seen . Below that is the mounting plate for the drives hyd trim. Very rarely will that leak there .
Lat but the worst is the transom seal, or a rotted transom, or the 2 lower bolts broken from a hard strike
 
Guess I found the culprit. The swivel hinge pin....
 

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locate the center, using a #3 drill bit drill 3/8 ths deep. Switch to a 1/16 th bit and drill watching the bit. You will see aluminum, then brass, then steel STOP
Tap for 1/4 x 28 thread and install the SS grease fitting
 

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