Fuel overflow?

[SgtYamm]

I own a 2005 1900SR3 that I just picked up in March. Every time I go to put fuel in, it will overflow out the fill port if I try to put more than about 1 gal in at a time without stopping to at least 10 seconds in between. I see that the tank has an air vent hose that comes up to where the fill port is. I see the little hole at the top, under the cap, where the air supposedly vents as gas goes in. Is this overflowing a common thing? Should I be looking for a clog in the vent hose? Is there a valve to the vent somewhere I should be opening first?

[mmwjr]

I would check for blockage in the vent line. Bugs love to build nests in the vent.

[Phillbo]

Yup, clogged vent line.

[SgtYamm]

Thanks. I’ll try pulling the line and seeing if there’s a clog. Looks fine from the outside.

[Marcoz9]

I have same issue on a 1997 2400 SCR - where the vent line is located?

[SgtYamm]

So the vent line is right next to the fueling line. They both run from the gas tank to the fill port on the side of the boat. I took off the gas fill port cap, disconnected the vent line from the tank, and blew some compressed air into it. Air went through just fine.

I did notice that the fueling port has a little black plastic cap inside of it, where the vent line connects. I'm not sure what this little cap does, but it can move in and out (open and closed?) if I pull on it with a bent paperclip.

Next time I go to fill my tank, I'm going to make sure that cap is pulled out and see what happens.

[mmwjr]

Originally Posted by Marcoz9

I have same issue on a 1997 2400 SCR - where the vent line is located?

The vent for your boat is on the starboard side near where the windshield ends but half way up the hull.

[mmwjr]

Originally Posted by SgtYamm

So the vent line is right next to the fueling line. They both run from the gas tank to the fill port on the side of the boat. I took off the gas fill port cap, disconnected the vent line from the tank, and blew some compressed air into it. Air went through just fine.

I did notice that the fueling port has a little black plastic cap inside of it, where the vent line connects. I'm not sure what this little cap does, but it can move in and out (open and closed?) if I pull on it with a bent paperclip.

Next time I go to fill my tank, I'm going to make sure that cap is pulled out and see what happens.

This is similar to your cars vent in the fill neck.

[SgtYamm]

I think I may have found the answer: I pulled the vent line off the gas tank again to investigate, and I noticed an orange plastic piece on the steel fitting that connects the hose to the tank. It took some needle nose pliers to get out, but I pulled out an orange plug from the fitting. I'll know for sure next time I go to fill up, but I think that was the problem. I think this thing should have been removed when the boat was originally assembled 17 years ago.

[mmwjr]

Interesting. I’ll be curious of the results and if you can post a picture of the piece.