iskjohnson
New member
I am new to site and need some help.
I recently purchased a boat with a '88 Yamaha 30 hp motor. There was water in the gear oil. After watching some youtube videos of putting in lower unit seal kits, I decided I would try it. I built a pressure tester and pressure tested the lower unit before I did anything else to test my tester and see where the leaks are. I submerged it when pressure testing with less than 10 lbs pressure. No air leaked from the prop shaft, only a few bubbles from the drive shaft when I turned it, but air is pouring out of the housing right in front of the shift linkage. Is this normal or do I have a cracked housing (from water in it freezing?) or another issue? It is not where I expected to see air coming from.
I have not removed the water pump housing or anything else yet. I appreciate any advice, Thanks.
I recently purchased a boat with a '88 Yamaha 30 hp motor. There was water in the gear oil. After watching some youtube videos of putting in lower unit seal kits, I decided I would try it. I built a pressure tester and pressure tested the lower unit before I did anything else to test my tester and see where the leaks are. I submerged it when pressure testing with less than 10 lbs pressure. No air leaked from the prop shaft, only a few bubbles from the drive shaft when I turned it, but air is pouring out of the housing right in front of the shift linkage. Is this normal or do I have a cracked housing (from water in it freezing?) or another issue? It is not where I expected to see air coming from.
I have not removed the water pump housing or anything else yet. I appreciate any advice, Thanks.