Fuel Tank vent on 37 - SailNet Community

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  • 1 Post By wsmurdoch
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Old 07-30-2013
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Crealock 37
 
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Fuel Tank vent on 37

I discovered yesterday that te fuel tank vent is located in the starboard cockpit storage area. (That little one recessed in the foaming). I discovered it when fueling, a bit of diesel burped out and was quickly absorbed by the pants a lady guest was wearing when the fuel drained onto the cockpit seat.

Is this the normal spot for the vent? Any tips to keep from burping fuel? I fuel slowly and listen carefully so as not to overfill.

Any problem with relocating the vent outboard on the coaming?
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Old 07-30-2013
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Re: Fuel Tank vent on 37

Hmmm, that is where the aft water tank vent is on a pic 34. The fuel tank vents right below the fill point near the companionway. I think you could move yours anywhere as long as it is above the fill pipe and be sure to have no saggy spots in the hose to trap fuel. You could stuff a fuel absorbing diaper below the vent to catch any that burps out. It may be burping out from old saggy fuel vent line that has some trapped fuel in a low spot.( that is what my boat was doing). Good luck.
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Old 07-30-2013
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Re: Fuel Tank vent on 37

Quote:
Originally Posted by sailak View Post
I discovered yesterday that te fuel tank vent is located in the starboard cockpit storage area. (That little one recessed in the foaming). I discovered it when fueling, a bit of diesel burped out and was quickly absorbed by the pants a lady guest was wearing when the fuel drained onto the cockpit seat.

Is this the normal spot for the vent? Any tips to keep from burping fuel? I fuel slowly and listen carefully so as not to overfill.

Any problem with relocating the vent outboard on the coaming?
Its in the same location as on Crazy Fish. I don't find it a problem as long as you know ahead of time where it is. Filling to close to full is a two person job with one person monitoring the fuel tank vent and one doing the filling. Usually place a cloth (supplied by the fuel dock) underneath the vent to catch any fuel.

Placing it outboard increases the chances it will end up in the water which you really don't want to do. I normally stuff the drain adjacent to the fueling port with a cloth as well so if any fuel backs up and out it will not go directly into the surrounding water.

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Marc
Crazy Fish - Maintaining, Upgrading and Sailing a Crealock 37
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Old 07-31-2013
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Re: Fuel Tank vent on 37

I use a DC plug inserted into the drain while fueling. My vent is located right next to it. I have two fuel tanks. The vent line is cross connected to both with a single vent outside. Talk about some burping when filling!
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Old 07-31-2013
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Re: Fuel Tank vent on 37

To reduce the amount of fuel tank vent hose sag and the amount of fuel stored in the sag, I placed a piece of PVC pipe in the bilge and threaded the fuel tank vent hose through the pipe. The pipe has an ID that is just larger than the hose OD. It runs from near the fuel tank to the spot at the engine where the vent hose turns upward. It is held up with cable ties that are screwed to the underside of the sole. Before I put the pipe in place, the vent hose rested in the bilge and had a significant sag. It is now a little higher with less sag. That has helped, but not totally eliminated, the burping.

I think the idea was in an earlier posting, but with the "Search" I have not been able to find it.

Bill Murdoch
Irish Eyes
1988 PSC 34
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Last edited by wsmurdoch; 07-31-2013 at 01:17 PM.
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Old 07-31-2013
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Re: Fuel Tank vent on 37

I have the same issue on my 37. Like others I try to listen carefully as I fill, but am not always successful in preventing leakage onto the starboard cockpit seats. I have simply become accustomed to cleaning up afterward
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Old 08-03-2013
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Re: Fuel Tank vent on 37

Sailak,
The previous owner for our boat found a small diameter piece of clear tubing that fits snugly into the vent. The other end goes into a small plastic container (an old juice bottle I think) that just sits on the cockpit floor under the vent. The burped fuel drips right into the bottle which can be poured back into the tank. Works great and no mess to clean up.
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Old 08-04-2013
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Re: Fuel Tank vent on 37

Racor makes, or did make, a device that prevents fuel tank vent overflow while taking on fuel. The Racor Lifeguard Fuel/Air Separator. The device as installed on Anna Marie seems to work well.
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