Gas tank drain rusted shut.

[vacca rabite]

I need to drain the bad gas from my truck, pull the tank and fix a potential leak.

I put a box end wrench on it, but could not get it to budge. I don't want to strip it, and I really don't want to round it off. Givne that it is a gas tank, I don't want to use heat (my usual solution.) I have hit it with PB Balster, but it has had little effect.

Any ideas? I would like to get the bad gas out before it really turns into gum.

Zach

[kwai]

PB blaster, pipe wrench and a long cheater bar. Put a new plug back in.

[randyscycle]

If the plug is brass, then it will come out and replacing it is the best thing.

First though, I'd try a really good short 6 point socket and a steady pull on it. If that doesn't do it, then if you have an impact screwdriver, give it a good whack and see if it can shock it loose. To be as safe as possible, I'd recommend a brass hammer to do it. After that, I'd try the pipe wrench idea Kwai mentioned.

[Fastfrankie]

All you have to do to get rid of the gas/fumes etc. is drop a burning paper towel or napkin in the tank. It will clear out the tank of gas and fumes and it will have zero flammability at that point.

My brass plug was rounded completely and I plan on using heat to get it out. Nothing, even vise grips worked.

[kwai]

a pipe wrench will grip rounded nuts, etc. The advantage of the pipe wrench over vise grips is that the harder you pull the more it grips the fastener.

[randyscycle]

Yeah, I've never had much luck with vise grips on anything round. Just seems to make it rounder.

[Wildcard21]

Hey amigo if you have a rusted plug drain try coca cola the phosphoric acid will penetrate the threads and eat the rust...THEN us PB blaster and a wrench with a cheater bar ive loosened some pretty impossible bolts that way good luck dude. soak a shop rag in fresh coca cola and find a way(duck tape) or Ive even filled the gas tank part with with coca cola and then drained it out to remove rust.