Gas tank leaking under pressure

[aleminx]

Tank is leaking from the drain plug in middle of tank underneath as well as from fuel pump area. I removed the plug, sanded surface clean and replaced the o-ring, and it does not seep anymore, also replaced rubber fuel line from pump. drove around and all was well until i let the car sit for a few hours. Now it is leaking... vapor expanding in tank perhaps creating internal pressure ? could my charcoal canister be to blame for this ? is this a common place for a leak ? I need some ideas/suggestions... original pinhole leak has been braised shut and now this... I will re-torque everything i suppose... gas fumes are driving me nuts!

[Bob Kontak]

Originally Posted by aleminx

Now it is leaking... vapor expanding in tank perhaps creating internal pressure ?

Describe the leak after your fixes. Did you see a leak?

You clearly did some good with your repairs but the gas cap is pretty notorious for stinking things up. For $10 it's worth it to replace unless you have seen actual leaking.

Your charcoal canister is in the right side rear fender. It does not hold any pressure. It's a pass through for the vapors. Doubt that is your problem.

[aleminx]

leak appears to be even worse than last night... fuel is dripping from the front passenger side of the tank below the lip.... will have to get in deeper . guess the tank comes out for the fifth time! updates to follow shortly. what a pain!

[Bob Kontak]

Originally Posted by aleminx

leak appears to be even worse than last night... fuel is dripping from the front passenger side of the tank below the lip.... will have to get in deeper . guess the tank comes out for the fifth time! updates to follow shortly. what a pain!

Ugh. Is there anything even over there for the tank to leak save a hole?

[aleminx]

Just discovered Another tiny rust hole/crack in the seam weld. Hopefully this is the last one.

[kodioneill]

Replace the tank don't repair it.