 In Tank Fuel Pump, Venting solutions |
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| Mowog4 |
 Oct 24 2022, 04:51 AM
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#1
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Member  Group: Members Posts: 291 Joined: 2-November 15 From: Mesa AZ Member No.: 19,325 Region Association: None 
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I am looking for suggestions on how to vent a tank with an in-tank pump. Fuel smell, and fuel sloshing are an issue. Any suggestions
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| GregAmy |
Oct 24 2022, 06:42 AM
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#2
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Advanced Member Group: Members Posts: 2,311 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States
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Can you describe your goals? I do this in my 914 racer with a fuel cell.
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| tygaboy |
Oct 24 2022, 06:56 AM
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#3
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914 Guru Group: Members Posts: 5,302 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California
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I'm running a Aeromotive Phantom in-tank pump in my LS car and I get a bit of fuel smell, too. I'm still developing the car and it runs an "open" vent line so I plan to route it to a charcoal filter. Maybe I'll reposition a stock one or give a go t making a custom one I can hide.
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| Van B |
Oct 24 2022, 07:12 AM
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#4
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Senior Member Group: Members Posts: 1,612 Joined: 20-October 21 From: Maryland Member No.: 26,011 Region Association: None
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You need a charcoal canister for fuel smell. That is still the go to solution. For sloshing you need either fuel tank foam or internal baffles.
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| Mowog4 |
Oct 24 2022, 01:26 PM
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#5
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Member Group: Members Posts: 291 Joined: 2-November 15 From: Mesa AZ Member No.: 19,325 Region Association: None
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I will add a charcoal canister, the sloshing is fuel running out of the vent tube when it is full. I’ll have to come up with a way to vent the tank higher in the air.
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| Mowog4 |
Oct 24 2022, 01:50 PM
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#6
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Member Group: Members Posts: 291 Joined: 2-November 15 From: Mesa AZ Member No.: 19,325 Region Association: None
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I will try to modify an expansion tank to work, see if that works
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| FL000 |
Oct 24 2022, 07:47 PM
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#7
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Member Group: Members Posts: 397 Joined: 31-January 12 From: Lancaster, CA Member No.: 14,076 Region Association: Southern California
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This is my setup. Evap canister didn’t fit but vent goes to charcoal canister then back to air intake.
Fuel slosh smell is still an issue but only when filled to the brim and on the turns.  |
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| Mowog4 |
Oct 24 2022, 09:10 PM
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#8
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Member Group: Members Posts: 291 Joined: 2-November 15 From: Mesa AZ Member No.: 19,325 Region Association: None
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QUOTE(FL000 @ Oct 24 2022, 06:47 PM)  This is my setup. Evap canister didn’t fit but vent goes to charcoal canister then back to air intake. Fuel slosh smell is still an issue but only when filled to the brim and on the turns. That looks great, very clean. I’ll need not to fill to the top. |
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| falcor75 |
Oct 24 2022, 11:06 PM
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#9
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Senior Member Group: Members Posts: 1,579 Joined: 22-November 12 From: Sweden Member No.: 15,176 Region Association: Scandinavia
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There are two way springloaded vents that only vent when there is an inside/outside pressure difference.
 I am using this for my seven replica and I have zero issues with fuel smell in the garage. |
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| Mowog4 |
Oct 25 2022, 08:08 AM
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#10
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Member Group: Members Posts: 291 Joined: 2-November 15 From: Mesa AZ Member No.: 19,325 Region Association: None
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QUOTE(falcor75 @ Oct 24 2022, 10:06 PM) There are two way springloaded vents that only vent when there is an inside/outside pressure difference. I am using this for my seven replica and I have zero issues with fuel smell in the garage. Interesting, where did you source it? |
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| andys |
Oct 25 2022, 11:39 AM
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#11
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Advanced Member Group: Members Posts: 2,165 Joined: 21-May 03 From: Valencia, CA Member No.: 721 Region Association: None
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QUOTE(Mowog4 @ Oct 24 2022, 08:10 PM) QUOTE(FL000 @ Oct 24 2022, 06:47 PM) This is my setup. Evap canister didn’t fit but vent goes to charcoal canister then back to air intake. Fuel slosh smell is still an issue but only when filled to the brim and on the turns. That looks great, very clean. I’ll need not to fill to the top. I did a FiTech pump, stock expansion tank, and charcoal cannister. No fuel smell or slosh. Andys  |
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| Mowog4 |
Oct 25 2022, 04:41 PM
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#12
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Member Group: Members Posts: 291 Joined: 2-November 15 From: Mesa AZ Member No.: 19,325 Region Association: None
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QUOTE(andys @ Oct 25 2022, 10:39 AM) QUOTE(Mowog4 @ Oct 24 2022, 08:10 PM) QUOTE(FL000 @ Oct 24 2022, 06:47 PM) This is my setup. Evap canister didn’t fit but vent goes to charcoal canister then back to air intake. Fuel slosh smell is still an issue but only when filled to the brim and on the turns. That looks great, very clean. I’ll need not to fill to the top. I did a FiTech pump, stock expansion tank, and charcoal cannister. No fuel smell or slosh. Andys Andy Looks great, any more pictures? Thanks Ed |
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| falcor75 |
Oct 26 2022, 12:55 AM
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#13
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Senior Member Group: Members Posts: 1,579 Joined: 22-November 12 From: Sweden Member No.: 15,176 Region Association: Scandinavia
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QUOTE(Mowog4 @ Oct 25 2022, 04:08 PM) QUOTE(falcor75 @ Oct 24 2022, 10:06 PM) There are two way springloaded vents that only vent when there is an inside/outside pressure difference. I am using this for my seven replica and I have zero issues with fuel smell in the garage. Interesting, where did you source it? I bought it locally here in Sweden in a store that specialises in industrial parts (llike McMaster-Carr) but you could make one yourself from a threaded plug, set screws, springs and ball bearings. Here is a parts link. https://www.wiberger.se/produkt/m_tsvv |
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