BC Broncos EFI Tank Vent

[airbur]

I searched (a little) but have run out of time. What do I do with the 2nd smallish vent on the BC Broncos EFI 23gal tank? I connected the other one to the stock vent line that runs up to the filler neck.

Just spilled a gallon of gas out this vent after filling up for the first time Do I just plug it? I don't have any of the evaporation system etc.

thanks.

 

[dmwelljr]

Doesn't it say on the instructions that came with the tank? if you don't have them, im putting my bc tank in tomorrow, the instruction packet is out in my shop if you need a copy

 

[airbur]

Yep...was looking it up as you were writing that

http://www.bcbroncos.com/fuel tank instructions 2010.pdf

Just below #6

 

[dmwelljr]

perfect!! Im going to tackle mine tomorrow!

 

[airbur]

Yep. Here's my temp quick fix. 5/16 hose with a bolt wrapped with Teflon tape and threaded into the hose. Then RTV around the head

 

[dmwelljr]

Nice!!!!! I might hit you up with some questions tomorrow!

 

[Viperwolf1]

How do you expect fuel to get pumped out when the lack of air creates a vacuum when you get down to about 1/2 tank?

 

[airbur]

The other line is connected to the filler neck and I believe my cap is vented......I think it is anyway

 

[airbur]

What is the alternative? I can run another vent line but to where?

 

[Viperwolf1]

What is the alternative? I can run another vent line but to where?

If you don't have the tank behind the seat you can run it like the '77 system. Mount the charcoal canister up high in the engine compartment and run the vent line straight to it. It'll keep your garage from smelling gassy too.

 

[airbur]

I don't have that tank....it's a 70 but must be an early version. I was hoping not to have to mount any more tanks and run more lines. So I can't just vent it out the tank close somewhere?

I take it the charcoal canister is a junk yard item?

 

[Viperwolf1]

You can use a vented cap which you should have if your old tank didn't have vent lines.

 

[toddz69]

Yep. Here's my temp quick fix. 5/16 hose with a bolt wrapped with Teflon tape and threaded into the hose. Then RTV around the head

View attachment 301308

That's exactly how I did mine and it's been working just fine for many years. Did it on the NWMP tank I had before it too.

Todd Z.

 

[bronc50]

I have seen some people take a inline style fuel filter and open it up fill with some charcoal then run your vent to it and zip Ty it up as high as possible against your filler tube

 

[airbur]

Wrong thread.

 

[dmwelljr]

I don't have that tank....it's a 70 but must be an early version. I was hoping not to have to mount any more tanks and run more lines. So I can't just vent it out the tank close somewhere?

I take it the charcoal canister is a junk yard item?

Just installed mine today, what did you end up doing with the 5/16 tank vent?

 

[bronconut73]

Regarding the charcoal canister. I have seen a thread here where guys are using fox body mustang charcoal canisters and mounting them on the fire wall side of the passenger inner fender sort of like the '76-'77.

 

[dmwelljr]

I was hoping to not have to use the canister, and not have to run a line back up front. Im not sure a vented cap will fit behind my gas door

 

[airbur]

I've still got that vent just plugged. No issues yet other than I think the pump is pulling fuel from my aux tank due to vacuum buildup.

 

[tatersalad]

I have run mine with a plug for two years now with the only issue being a vacuum to the aux. tank leaving it empty. I haven't got around to putting the electric selector back in to stop that from from happening. A charcoal canister is on my to do list though.... : )