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Water in lower unit., weep hole leaking.

Moe252

New member
I have a 25hp Mariner and recently drained the lower unit oil and discovered water in the oil, I continued to change the oil. I ran the motor with muffs for a few minutes and noticed water pissing from the weep hole, this cannot be good. Where do I start troubleshooting? Which seal does this indicate is bad? Any advice is greatly appreciated.
 
Water can get in the gear oil in two places;the seal under the water pump and the seal on the prop shaft.
As for the water coming out the exhaust relief holes; I haven't run my motor on muffs for years, but I think just the water pressure from the garden hose can force water out those holes.
 
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