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  1. C

    Merc. MPI 300 Water Leak-Water Distribution Housing? & Winterization Question

    The distribution housing doesn't look cracked or comprimised, its possible though. I will look into pressure testing an open cooling system as Scott Danforth stated as well.
  2. C

    Merc. MPI 300 Water Leak-Water Distribution Housing? & Winterization Question

    Shoot, doesn't sound good that's for sure. I've attached a video with the muffs installed and the water running. There is a consistent drip with the engine off. With the engine running there is definitely more water flowing/leaking. I have taken the cooling hoses off the water distribution...
  3. C

    Merc. MPI 300 Water Leak-Water Distribution Housing? & Winterization Question

    I installed the earmuffs on the lower unit, ran the engine until the boat was up to temp and the thermostat opened, then switched over from hose water to my RV antifreeze jug. Suck through maybe 3 or 4 fgallons once it spit out the exhaust i shut the engine off.
  4. C

    Merc. MPI 300 Water Leak-Water Distribution Housing? & Winterization Question

    Hey All, I started up my Monterey super sport this spring here and realized I had a water leak. I've attached a video of a slow drip from the Water Distribution housing. I pulled the hoses and inspected the distribution housing and it appears neither have any cracks or leaks. Looking into...
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