2010-14 240 scupper

[robert843]

I have seen issues with the older models but has anyone ever had water come back into there boat from the scupper on the newer ones? Just curious a few weeks back someone in the boat said they say a little water near that drain inside the boat. I never saw the water but it was a little wet back there I open the engine hatch and searched the compartments back there everything appeared good this is about the only thing I can think of. I did notice a very small drip at one of the flush points but tightened the cap and it was fine but nut enough to make any noticeable amount of water.

 

[Gym]

@robert843, here is a link from @Belteddeep who, I suspect, may have the same issue. https://jetboaters.net/threads/on-t...ou-are-in-urgent-need.2935/page-8#post-159496 He suspects that when they sit on the swim platform the scupper goes under the water line and lets some water in. If your scupper is cracked this is a definite possibility. While on the trailer you can put about 5 gallons of water in the engine compartment which will flow into the lower bilge. You can then observe where water is leaking from at the stern of the boat. Raise the bow of the boat with the trailer jack to keep the water concentrated in the lower bilge.

 

[Bill D]

On my 2011, the scupper is below the deck fitting inside the boat, so I think the only way to get water to flow in the scupper would be when I quickly slow down from speed, if the scupper was stuck open. I have had water collect back there from the flush ports. If I don't get them super tight, they will dribble water when the engines are running. The water usually follows around the engine compartment and makes its way to the floor then to the scupper.

I was really scratching my head trying to figure that one out. I didn't realize there was no type of check valve in the flush lines.

 

[Ronnie]

The scum line on my boat after recently taking it out is just below the scupper so having it sink below the water line by having people sit on the back or swim deck is totally plausible. One way to check if the scupper is leaking would be to block it off with tape and or a rag, getting visibility to it by removing the hatch above the clean out plugs and filling the deck fitting with water. If it or the hose connected to it is leaking you should be able to see the leak this way.

 

[MrMoose]

@robert843 I think that folks are talking about different things here. I'm not exactly sure of the scenario that you are asking about.
1. Are you wondering if water is entering the scupper valve, flowing up the deck drain tube and showing itself in the area where the drain tube starts in the cockpit area?
2. Or, are you referring to the scupper valve's hull fitting leaking at the hull/fixture interface?
3. Or, are you referring to the drain hose connections (to the deck drain flange and to the scupper valve at the transom) leaking?
So, with the higher placement of the scupper on the newer models, the boat won't suddenly and uncontrollably flood due to constant water pressure on the failed scupper valve, but the boat can take on some water through the deck drain system.
The first scenario is possible even if there are no leaks. If you have a low spot in your deck drain hose, I think that it is possible that enough water could collect in the low spot and splash its way forward with boat movement. It's also just as possible that a wet swimmer could have deposited water in the area too.
The second scenario happened to me. There was a very small crevice between the scupper flange and the hull. Capillary (not water pressure) action draws water into the crevice and gravity pulls it down to form a drop on the inside of the transom. A small bead of 3M 5200 on the outside of the flange/hull interface corrected this.
The third scenario is possible considering that the deck drain hose gets water in it from both ends. Capillary action and gravity can produce drips if the hose/fixture interfaces are not properly sealed.

These scenarios are all different than the catastrophic flooding scenario that can exist with scupper valves that are always below the water line.

 

[Boat Crazy]

It is possible a little water hanging out at the area where the drain line is attached at the cockpit area. There is a slight lip where it is mounted. Water in cockpit, before you plane water runs to that location and you may have excess around the lip. As for the scupper, if you remove your center cover ( not the one bolted down) the one that just lifts out, with weight on the rear deck in water and a flashlight in hand, you can feel for water moisture or visual on the scupper.

 

[MrMoose]

@Boat Crazy , you are correct...

 

[Matt Phillips]

A couple of things may cause that. As said above, people sitting on the deck may lower the stern enough to allow a cracked scupper to leak. Other possibilities may be if cutting power from a plane too quickly, the wake will boil up on the stern and you may have a lead around the man hole cover hatch (I know it's hit or miss when people have removed this as to if there's silicone on it or not). I know it's not uncommon of the bilge pump on mine to cycle when wake boarding and there's a lot of stopping-starting-people on and off the stern of the boat.