2015 R21EC - diesel burping out the tank vent...

[sheral]

Sheral , with respect to the reference of 45 degrees maximum off vertical for the surge protector, I take that as the maximum off vertical including the angle during the maximum roll of the boat in rough sea conditions. The install angle for "flat" condition should be much closer to vertical than 45 degrees.

yes you are very likely right. upon checking the space around the tank again today, we don't have the room to install any of the surge devices properly, so on a 21, they aren't an option.

i have pulled the vent line as tight as possible (less than an inch was cut off the line) and reattached to the top of the tank as per Andrew's advice. i also found a rubber cap that i have put over the vent cap (when moored) so hopefully that will stop the gooey mess that has been occurring. 😉

 

[baz]

Sheral: Please let us know if what you did resolved the problem. Thanks... 🙂

 

[ALICE J]

I seem to recall about the sloshing in an outboard tank that was full made the tank swell if the vent cap was on tight. Does Diesel expand when it is sloshed around and thus causing pressure that would burp the fuel?

 

[Stevan47]

Hi Andrew: Thanks for your advice. Having said that, does the same suggested remedy apply to my 2009/2010 R21? I assume the tank and vent layout/designs are similar. In my vessel, the spill hose which runs from the filler pipe to the port side of the tank does have a considerable sag (low point) in it - would you suggest I cut this short so that it is fairly taut and lies across the top of the tank, rather than behind and below the tank top? Your thoughts?

Stevan

 

[sheral]

Hi Stevan.

Hopefully Andrew will reply, but from what I have learned, yes, remove the vent line at the top of the tank and pull it really tight and then cut off any excess line. Replace the line and clamp it back onto the top of the tank, port side. If you are able, make a couple of blocks so that it supports the line from the tank attached side up to the vent. Cut little blocks or a fabricate a 'ramp' so that the line rises gradually from the top of where it exits the tank to where it meets the exterior vent.

Sounds as if it is a 'must do' to keep diesel from exiting the vent...

We did it and so far, touch wood, all is good.