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 Charcoal filter on fuel tank vent??
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Author Previous Topic: Boat charter in the Abacos Topic Next Topic: Surveyor in Sandusky Ohio  

PascalG

RO# 12212



Posted - Feb 22 2017 :  11:59:00  Show Profile  Reply with Quote
Another great idea that causes more harm than good...

In the past couple of weeks, I ve had issues filling the tender fuel tank... had to go slow and no matter what I ended spilling fuel.

Traced the vent line and discovered an Atwood charcoal filter, proudly labeled "EPA compliant" on the transom behind the vent. Brillliant idea... of course after only 6 months the charcoal inside has solidified. Siding have a fitting to bypass the damn thing so I punched holes inside the element

I wonder who came up with this stupid idea... EPA? It's causing more harm from spilled fuel than vapors.
Pascal
1970 Hatteras 53 MY
26' Starfish sloop
12' Westphal Catboat
16' Hobie Cat
13' Sandbarhopper

Homeport: Miami, FL

Gregory S

RO# 2620



Posted - Feb 22 2017 :  12:33:48  Show Profile  Reply with Quote
So when the charcoal is saturated with fuel vapors, can you light them like a charcoal briquette?


Homeport: Norfolk, Va Go to Top of Page

Stephen

RO# 14

Posted - Feb 22 2017 :  19:20:49  Show Profile  Reply with Quote
quote:
Originally posted by Gregory S

So when the charcoal is saturated with fuel vapors, can you light them like a charcoal briquette?



Yes, but only if you use "marine" matches. They're only $10 a piece and the first two are guaranteed to fail!



Homeport: Matts Landing, NJ Go to Top of Page

RWS

RO# 25075



Posted - Feb 23 2017 :  05:41:55  Show Profile  Reply with Quote
i have a charcoal vent filter on my HOLDING TANK.

Keeps the poop smell down if you are swimming around the vent.

are these intended for fuel system use?

RWS



1983 Trojan International 10 Meter
Twin Yanmar 315 Turbodiesels
Solid Glass Hull
Woodless Stringers
Full Hull Liner
Trojan International Website: http://trojanboat.com/

Homeport: FL Go to Top of Page

GeeBee

RO# 385



Posted - Feb 23 2017 :  07:34:44  Show Profile  Reply with Quote
No. Not the same unit.

If you think the filter is a big deal, you should see the new vapor recovery and emission control units on inboards. Makes me not even want to look at the new models.

http://perko.com/catalog/fuel_system_components/


http://www.uscgboating.org/assets/1/AssetManager/ABYC.1002.01.pdf


"The trouble with socialism is that you eventually run out of other people's money."... Margaret Thatcher

Homeport: Lake Lanier, GA Go to Top of Page

Good Grief

RO# 13137



Posted - Feb 23 2017 :  07:46:24  Show Profile  Reply with Quote
Attwood carbon canisters -

http://www.attwoodmarine.com/store/product/integrated-fuel/carbon-canisters

never hear of such a thing, but apparently, it's a thing.


-Gene
If you're not a liberal at 20, you don't have a heart. If you're not a conservative at 40, you don't have a brain - Winston Churchill

Homeport: Viking Boat Yard, Verplank NY Go to Top of Page

smitty477

RO# 31913



Posted - Feb 23 2017 :  10:07:32  Show Profile  Reply with Quote
"In the past couple of weeks, I ve had issues filling the tender fuel tank... had to go slow and no matter what I ended spilling fuel.

Traced the vent line and discovered an Atwood charcoal filter, proudly labeled "EPA compliant" on the transom behind the vent. Brillliant idea... of course after only 6 months the charcoal inside has solidified."

Yes - I had 4 of them on a large RIB and had the same issues. Had to remove them and splice in a clean line so not to have a mess at each fill up - good luck with yours.



Homeport: NY Go to Top of Page

PascalG

RO# 12212



Posted - Feb 23 2017 :  12:50:39  Show Profile  Reply with Quote
And to make things worst, the brackets use a nut and bolt (top and bottom) to hold the canister but there I see no way to hold the nut in place, especially on the bottom bracket.

I hate charcoal filters on holding tanks, sooner or later they will clog up and a strong pump out station will damage the tank


Pascal
1970 Hatteras 53 MY
26' Starfish sloop
12' Westphal Catboat
16' Hobie Cat
13' Sandbarhopper

Homeport: Miami, FL Go to Top of Page

Good Grief

RO# 13137



Posted - Feb 23 2017 :  15:21:06  Show Profile  Reply with Quote
if you can comfortably center the nut over the bracket hole, use a dab of crazy glue to attach the nut to the bracket (careful not to glue your fingers to the nut - latex gloves!) Once it's reasonably dry, you should be able to screw the bolt into the nut - when you cinch it up, the glue will break free, and the nut's accessible again.

-Gene
If you're not a liberal at 20, you don't have a heart. If you're not a conservative at 40, you don't have a brain - Winston Churchill

Homeport: Viking Boat Yard, Verplank NY Go to Top of Page

ALKA2710

RO# 25407

Posted - Feb 24 2017 :  07:42:22  Show Profile  Reply with Quote
My holding tank has a pressure relief valve built into the top. It has a foam filter and a spring with a flap. Only reason I knew it was there was because I was getting a faint tank smell in the cabin and someone recommended checking out this valve. Took it apart, dropped some screws in the tank, was able to drain tank and get screws back, still have the smell in my nose 6 months later. Fixed the problem.
Al



Homeport: FREEPORT Go to Top of Page

Kevdon22

RO# 32964

Posted - Feb 24 2017 :  11:05:27  Show Profile  Reply with Quote
I had a similar problem with my Aquasport 2000 IO. I had problems with filling the fuel tank and had to disconnect the vent line from the filler cap (strange integral design vent/ fill fitting that apparently can allow rain water to enter the fuel tank under heavy rains), since it often spills gasoline into the vent line during filling.
Often I have to pressurize the vent line to clear out the accumulated gas. My mechanic told me that the design of the vent line has an intentional low point to reduce emissions. Instead it causes more spillage. I guess the newer ones have a carbon filter, hopefully not an intentional low point which can block filling as the fuel collects too high in the vent line.


Kevdon
Forked River,
Barnegat Bay
NJ

Homeport: Forked River, NJ Go to Top of Page
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