Fuel Vent

[Jackman]

I was curious about something...

Now that I am diesel....is there any reason to have the tank vent located on the outside of the boat? I seem to have issues getting water in the tank vent as well as the air intake vent(which I'm working on building drain boxes thanks to a forum member.) Can a diesel tank vent be located inside the boat in some way so as to avoid getting water in the tank in rough seas?

 

[SKYCHENEY]

Your tank vent should have a big loop on it that goes up inside the hull to prevent water from getting in and to the tank. Check to see if you have the loop and if it goes up high enough.

 

[CapetaniosG]

I would not recommend tank vents dicharhing inside a boat even if it is diesel powered. If the propet type of vent is used and the piping is done properly there is no chance water can come in from the fuel vents even in rough water. There should be a large loop (inverted U) leaving the vent. It goes up along the inside of the hull, and turns down and routed to the tank. If done properly I don't see how water can enter the tank. If you put the vent inside the boat (presumably discharging into a container) are you going to have a person watching for overspill while you are refueling? Bad idea in my judgement, but it is your boat......

capetaniosG

 

[Jackman]

I don't have plans in motion to do it I was just wondering why its not done. My vent loops up about 10 inches or so as it was from the factory. I still seem to get water in the tanks. There is a new oring around the fill cap and I grease it with waterproof grease. I don't know what else to do to prevent it.

 

[Jaxfishgyd]

Can't think of any boat that is not vented overboard.

And like stated, who would want to have diesel overflow inside the boat. Just think of the mess and smell that could happen.