True North
Member
- Sep 11, 2012
- 165
- Boat Info
- 2005 SR 260DA
350 MAG MPI
Bravo 3
- Engines
- (1) 350 MAG MPI w/Bravo III
new to me boat has sprung a leak (2005 SR 260DA with 350 MAG MPI, B3). After close review I am able to determine where it is coming from, however I'm not sure how to go about repairing it. I forgot to take a pic and the boat is now 150 miles away again, so pls bear with me+ I am just now getting familiar with the boat since I have only had it since July 3rd
It is on the starboard side of the motor, on the bottom of the block, down low, right above the oil pan, centrally located, right behind (aft) of the fuel pump/filter "black box". It looks like the older style freeze plugs. It's got a threaded brass part that looks like it's screwed into the block, but has a small diameter hose leading from it. It sits behind a bunch of other water hoses (larger ones). It appears there is one similar to it on the port side of the motor as well. I assume it is part of the cooling system (fresh water cooled). It only leaks when the boat is running i.e. circulating cooling water. I verified it both on the muffs on the trailer and in the water. I can't tell for certain if it is actually leaking from the threads into the block (it appears there may be some type of plumbers putty or some sort of sealer on it) or the hose that is attached to it. There are no hose clamps on either one (port or starboard) so my guess is not a high pressure water route or forgot to put clamps on from the factory??? I will have to remove other hoses in front of it to gain proper access.
So who can tell me what those are and how I should go about trying to repair it? I'm worried about if it is a cross-threaded situation of a plug from the factory-boat only has 300 hours on it. It didn't leak during sea-trial??? It causes enough water in the bilge to run the bilge pump every so often. I have continued to use it with the leak as it doesn't appear to be impacting operating temp. Does anybody have a water-cooling diagram resource of what this could be?
Sorry so detailed, but without a pic wanted to provide as much info. Thank you in advance.
It is on the starboard side of the motor, on the bottom of the block, down low, right above the oil pan, centrally located, right behind (aft) of the fuel pump/filter "black box". It looks like the older style freeze plugs. It's got a threaded brass part that looks like it's screwed into the block, but has a small diameter hose leading from it. It sits behind a bunch of other water hoses (larger ones). It appears there is one similar to it on the port side of the motor as well. I assume it is part of the cooling system (fresh water cooled). It only leaks when the boat is running i.e. circulating cooling water. I verified it both on the muffs on the trailer and in the water. I can't tell for certain if it is actually leaking from the threads into the block (it appears there may be some type of plumbers putty or some sort of sealer on it) or the hose that is attached to it. There are no hose clamps on either one (port or starboard) so my guess is not a high pressure water route or forgot to put clamps on from the factory??? I will have to remove other hoses in front of it to gain proper access.
So who can tell me what those are and how I should go about trying to repair it? I'm worried about if it is a cross-threaded situation of a plug from the factory-boat only has 300 hours on it. It didn't leak during sea-trial??? It causes enough water in the bilge to run the bilge pump every so often. I have continued to use it with the leak as it doesn't appear to be impacting operating temp. Does anybody have a water-cooling diagram resource of what this could be?
Sorry so detailed, but without a pic wanted to provide as much info. Thank you in advance.