just an idea on what to expect when getting ready to put your gas tank back in
you either redo all your evap / vent lines or you plug them off and run a vented gas cap….some pre 70 cars will not have vents /evap lines so watch my removal video if you dont know anything about chevelle gas tanks
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Do those vent lines just go right into the tank and connect to nothing on the inside ? I'm thinking of using one for a fuel return line in my set up
LED for the head..
Digging the Sabbath
i dont know after seeing the shit that you went though i think i will just flush out the tank after i drain it. screw all that noise not for me that's for sure. Larry Broad 1970 el camino custom 350 350
i will buy a new one for $117
wasting time get new gas tank
Is it possible for your fuel sending unit to short out
I’m pretty sure I learned how to rebuild a steering gear from you several years ago… I remember your voice and your demeanor and its hella funny considering how many videos I watch a day.
After 46 years working on EFI vehicles & carb vehicles, the cap and carbon canister is misunderstood.
Carb=non-vented cap>if cap is behind license plate (non-vent-out+2psi in)
Carb w/o canister>cap is 2psi in+1psi out (Old School prior to 66)
Carb w/canister>cap is 2psi in+1psi out (1 fuel line at pump/tank vapor to canister/TVV to intake)
Carb w/canister>cap is 2psi in+1psi out (2 fuel lines at pump/tank vapor to canister/TVV to intake/return liquid line 2 at pump)
Carb w/canister>cap is 2psi in + 1psi out (2 fuel lines at pump/tank vapor to canister/computer controlled vapor purge to intake/in-leaded/July 79)
EFI (TBI-Multi Port)w/canister>cap is 2psi in+2psi out/CCV vapor purge)
OBD-2 w/canister>cap 2psi in+2psi out/EVAP Test/CCV purger+tank vent)
Most all locking caps do not pass EVAP test.
Activated carbon stores gas vapors/allows for filling/burns fuel paid for/newer style can be mounted at rear/ requires roll-over valve/all w/2psi in require vent from tank to top of filler tube.
Activated carbon canisters get warm during filling/exothermic action/if missing-plugged-crimped lines-blocked off/may-will cause difficult refueling event/aspirator tube at pump will kick off fuel flow.
EFI/OBD-2/2018 or newer>cap is 3psi out/1psi in/EVAP Vent-Purge (Note)
Programming can delete EVAP testing, yet allow purge/rear mount canister/gas fumes captured during re-fill/roll over valve safety-high mount loop in hose in fender above filler neck/burns gas fumes paid for/no fueling problems/higher MPG/endothermic reaction when fumes removed during purge/explains high hump in tank-separate liquid from fumes/roll over valve internal/aftermarket outside in vent line/no vent line+provide foam-filter to vent in to canister. (60+Years covered/salvage yard truck canisters+ hose connections to adapt/canister sized to fuel tanks/larger better or ok/simply volume of trapped hydrocarbons you paid for!
Exothermic = warming / Exothermic = cooling
(Note; Improper tank venting can cause can create tank pressure with wrong cap, venting strategy, improper hose routing, plugging or carb flooding. Always check vent lines for small carbon bits. These are indicators that the canister was flooded with raw fuel or bad spring-loaded end screen inside canister. Each activated carbon granule can hold 4,000 times its own weight in vapor hydrocarbons. Please think about your tank vapor strategy before you have problems. This is facts, not brag.
Chris if I used the tank with no vents!should I plug the pipes that are coming from the top
El Camino when it won't run seems like it's running out of gas changed all the lines
What did you use for the those gas tank rubber block anti squeeze things?
I am going to replace the fuel tank in my 70 El Camino, I am getting a non-vented fuel tank to replace mine. I will get a vented fuel cap. will this take care of my venting needs? I am also going to eventually change go from mechanical fuel pump to electric, I have heard that I will need to install a fuel return line when I install my throttle body fuel injection, will I need to consider buying a different fuel tank setup in preparation for this change? maybe one with a fitting for a fuel return line? I really enjoy your videos on all the different things you do to your A body GM cars. they are very helpful. thank you for these vids.
I have a 68 El Camino and my fuel gauge just stopped working. Do you think problem is in the tank or at the dash. I know it could be many things, but any suggestion would help. I put in a new wiring harness 10 yrs ago.
Chris you just saved me a bunch of fucken time man . I just got a tank from summit with the 3 vents . now I know what I have to do with these things . Thanks man . Vented gas cap .
Vented gas caps leak on those cars that have the fill in behind the lic plate, that's why they make non vented caps,
Best way to vent is to buy a one way in line valve and put it on the vent .
what do you do for fumes. Vented gas caps only vent for suction not for fumes and pressure.
If my 72 skylark had a vapor return line would it be next to the fuel line? I like the idea of just buying a vented cap and blocking the 3 or 4 vent lines. Will this work with an inline fuel pump?