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SevenT
Official CCB Member
Joined: Sun Nov 14, 2010 8:16 am
Posts: 24
Location: Colorado Springs
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 BC Broncos EFI tank pushing gas out of vent Just installed the EFI tank and while priming the fuel pump, the vent line pressurized and blew gas out of my charcoal canister. Took the gas cap off thinking there was too much air in the tank. No luck there. Has anyone has this issue with this tank? I have an idea to tee the vent line into the 5/8 fuel filler vent to get liquid back into the tank and fuel fumes to the charcoal canister. Any assistance is appreciated.
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70 Bronco - '88 EFI 5.0 w/ RJM harness, JB Fab Twin Stick D20, AOD w/Art Carr shifter, 3.5" WH lift on 33s, 4.11s. Mods: Chevy disks in front, hydroboost parts laying in garage.
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| Sun Nov 15, 2015 5:50 pm |
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Viperwolf1
Official CCB Member
Joined: Tue May 07, 2013 10:37 pm
Posts: 1485
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Re: BC Broncos EFI tank pushing gas out of vent Are you sure it's hooked up correctly? If you think it is then you're probably going to have to open it up and see what weirdness is going on in there. Should be no reason for fuel to come out the vent tube.
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| Mon Nov 16, 2015 12:18 am |
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SevenT
Official CCB Member
Joined: Sun Nov 14, 2010 8:16 am
Posts: 24
Location: Colorado Springs
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Re: BC Broncos EFI tank pushing gas out of vent Viperwolf,
You would think they would be better than that. Quality is in question if during assembly they neglect to make it match the install diagram. The one thing that sucks is that there are about 18 gallons in the tank.
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70 Bronco - '88 EFI 5.0 w/ RJM harness, JB Fab Twin Stick D20, AOD w/Art Carr shifter, 3.5" WH lift on 33s, 4.11s. Mods: Chevy disks in front, hydroboost parts laying in garage.
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| Mon Nov 16, 2015 6:16 am |
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Rox Crusher
Official CCB Member
Joined: Sun Oct 10, 2010 5:36 pm
Posts: 3980
Location: Roxborough Park, Colorado
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Re: BC Broncos EFI tank pushing gas out of vent There is no end to the number of mistakes they have made during assembly.
Ask me how I know
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1977 Sport, 351w OBDII EFI motor, 4R70W auto, 4:88 gears, ARB lockers, 3.5" suspension, 33" tires.
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| Mon Nov 16, 2015 8:52 am |
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D&D72
Official CCB Member
Joined: Sun Sep 11, 2011 10:49 pm
Posts: 988
Location: Henderson, Co. Grand Lake, Co
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Re: BC Broncos EFI tank pushing gas out of vent
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That guy John.... whatta Jerk.
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| Mon Nov 16, 2015 4:58 pm |
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Viperwolf1
Official CCB Member
Joined: Tue May 07, 2013 10:37 pm
Posts: 1485
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Re: BC Broncos EFI tank pushing gas out of vent He is so familiar with the inside of his tank he actually made a door to get to it.
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| Mon Nov 16, 2015 8:39 pm |
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Rox Crusher
Official CCB Member
Joined: Sun Oct 10, 2010 5:36 pm
Posts: 3980
Location: Roxborough Park, Colorado
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Re: BC Broncos EFI tank pushing gas out of vent
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1977 Sport, 351w OBDII EFI motor, 4R70W auto, 4:88 gears, ARB lockers, 3.5" suspension, 33" tires.
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| Mon Nov 16, 2015 9:30 pm |
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casadejohnson
Official CCB Member
Joined: Tue Oct 05, 2010 9:30 pm
Posts: 708
Location: Greeley
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Re: BC Broncos EFI tank pushing gas out of vent I grow a little more fond of my external pump humming away each time I read about the joys of trouble shooting an in tank pump.
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| Mon Nov 16, 2015 11:24 pm |
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B.O.B.
Official CCB Member
Joined: Thu Nov 11, 2010 10:31 am
Posts: 770
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Re: BC Broncos EFI tank pushing gas out of vent If you have some gas cans just in hook the canister and let the gas go through the line until there is enough to drop the tank. I did that a few times. I also just dropped the tank then used the pump to pump all the gas out then hang it back up.
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71' bronco, np435 w/trailbanger, 302 efi, 35" KM3 on 17x9 Fuel Anza, warn xd9000i, cage arms, 5" lift
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| Tue Nov 17, 2015 7:16 am |
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SevenT
Official CCB Member
Joined: Sun Nov 14, 2010 8:16 am
Posts: 24
Location: Colorado Springs
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Re: BC Broncos EFI tank pushing gas out of vent B.O.B,
Good idea, I don't like the taste of gas.
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70 Bronco - '88 EFI 5.0 w/ RJM harness, JB Fab Twin Stick D20, AOD w/Art Carr shifter, 3.5" WH lift on 33s, 4.11s. Mods: Chevy disks in front, hydroboost parts laying in garage.
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| Tue Nov 17, 2015 10:16 am |
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bronco117
Official CCB Member
Joined: Wed Dec 08, 2010 10:56 pm
Posts: 6
Location: Colorado Springs
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Re: BC Broncos EFI tank pushing gas out of vent I have that tank with an external pump feeding an efi 5.8. It will fill the bottle behind the seat which then leaks gas into the cab then sends fuel into the charcoal cannister. Which sits just over the right header. I never fill it up anymore. I have a theory that cold gas from under ground warms up and over pressurizes the tank. I do not have a solution.
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| Sat Dec 12, 2015 8:25 pm |
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SevenT
Official CCB Member
Joined: Sun Nov 14, 2010 8:16 am
Posts: 24
Location: Colorado Springs
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Re: BC Broncos EFI tank pushing gas out of vent All,
Found the connections backwards and the fuel pressure was not going to the fuel rail. Everyone makes a mistake at times. Corrected connections and the truck started and then ran out of fuel. Now I have error codes 95 and 96. Is this just the relay or did the pump die? I need to get this fixed since the truck is due at the Bronco Hut for body and paint. Thanks in advance.
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70 Bronco - '88 EFI 5.0 w/ RJM harness, JB Fab Twin Stick D20, AOD w/Art Carr shifter, 3.5" WH lift on 33s, 4.11s. Mods: Chevy disks in front, hydroboost parts laying in garage.
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| Sun Dec 13, 2015 12:51 pm |
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Unaweep
Official CCB Member
Joined: Thu Sep 12, 2013 3:02 pm
Posts: 291
Location: Grand Junction, Co.
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Re: BC Broncos EFI tank pushing gas out of vent BC sells it, but who manufactures that tank?
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1969 Ford Bronco with: 351W, Q-Jet, ARB front locker, 3" Suspension lift, NP435 transmission, 33" Goodyear's, roll cage, body rough.
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| Sun Dec 13, 2015 9:38 pm |
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SevenT
Official CCB Member
Joined: Sun Nov 14, 2010 8:16 am
Posts: 24
Location: Colorado Springs
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Re: BC Broncos EFI tank pushing gas out of vent Unaweep,
According to BC Broncos, it is their tank.
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70 Bronco - '88 EFI 5.0 w/ RJM harness, JB Fab Twin Stick D20, AOD w/Art Carr shifter, 3.5" WH lift on 33s, 4.11s. Mods: Chevy disks in front, hydroboost parts laying in garage.
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| Mon Dec 14, 2015 10:07 am |
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SevenT
Official CCB Member
Joined: Sun Nov 14, 2010 8:16 am
Posts: 24
Location: Colorado Springs
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Re: BC Broncos EFI tank pushing gas out of vent Good news,
Dropped the tank and opened the top, The ground wire was not crimped into the lug connected to the ground stud. Finished the job and now my truck runs. Like the tank, just hate quality control issues.
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70 Bronco - '88 EFI 5.0 w/ RJM harness, JB Fab Twin Stick D20, AOD w/Art Carr shifter, 3.5" WH lift on 33s, 4.11s. Mods: Chevy disks in front, hydroboost parts laying in garage.
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| Thu Dec 31, 2015 1:34 pm |
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