AQ125 water leaking into bilge

[parkermt]

Noticed my bilge pump going off... more than usual anyways heh, heh... and it seems I've sprung a new leak at some point in the last couple months. I'm no penta guru by any means, but it looks like maybe a freeze/core plug by the shut-off **** and near the exit boot... or whatever that circle thing is... got partially unseated. Should I try to re-seat (re: hammer it back in) or should I take it to a mechanic? AQ125 is running fantastic temps/pressures etc. are all in line with what I would expect. Thanks for help and sry for awful mov quality was trying to find it with my phone.

 

[Scott Danforth]

Get a new core plug and install it

 

[kenny nunez]

The manifold has to come off, it may be possible that the inner bore for the core plug is eroded. If that is the original manifold it needs replacing. The inside of the manifold at the exhaust outlet by now will be also eroded.

 

[parkermt]

Thank you for the replies. I'll look into removing the manifold if only to see what else is going on in there and to learn more about the motor. About all I do is change the oil and check the timing every season. It's been a remarkably reliable motor for how little it gets used (maybe 10-15hrs a summer). Starts every time, idles @ 900 smooth as a baby's bottom and purrs at its happy place of 3,600rpm cruising around at 190deg. Been very happy with it.

 

[kenny nunez]

These are the Sierra Marine part #s for replacing the manifold.
18-1930-2. Manifold
18-2991-1. Gaskets
18-8539. Mounting kit
18-3889. Seals
When you contact Sierra double check what is included with the manifold.
Items ending in 91-39 may come with the manifold. Be sure to order the seals that seal the pipes

 

[parkermt]

18-1930-2

Thank you. I suspect I'll try the $9 part first before replacing the whole manifold. It's a pretty low hour AQ125A and I suspect that when I winterized last fall maybe all the fluids didn't actually come out or I missed something and it may have expanded in there. There's a financial reason I'm running an old '85 boat that I can (more or less) fix myself with duct tape and super glue as opposed to something newer/fancier haha. I do appreciate the part numbers though!

 

[Scott Danforth]

Old boats cost you in repairs. New boats cost you in payments