Topic: EFI Fuel Tank Question

[georgia 4Runner]

I have a used EFI fuel tank for a 1986 4Runner that has some surface rust inside as the junkyard had drained all of the gas out of it. A local radiator shop can solvent clean the rust out and claims that if I put gas back into it quickly it, the rust wil not come back. My question is a friend suggested I get them to coat the tank inside as well, but I have heard that the sealers can lift and then affect the EFI system. Any recommendations? Thanks in advance for any help.

[79coyotefrg]

you can drop a couple feet of  chain in the tank  and shake it all around  then  fish it out with a wire  and then flush it out good,  thats what ive done in the past

[spacoli]

I had just removed a tank from a 93 truck I bought that had been sitting for over two years. The tank as you could imagine the tank was a mess inside. The fuel pumped was staining because the screen was so clogged up.
There was only a few minor rust spots that I ended up treating with this por15 fuel tank sealer.

http://www.por15.com/bSPECIAL-Quart-of-Fuel-Tank-Sealer-Quart-of-Metal-Ready-b?sc=2&category=180

I was only going to treat the rust spots but I ended up coating the tank half way up to the seam. I can't testify to the long term durability or effects of the coating on the EFI because I only have 1000 mile on the truck since getting it running.

Por15 sells a degreaser (marine clean) that should be used to remove any gas residue. then you need to treat the inside of the tank with the metal ready to chemicly etch the metal for the tank sealer to bond.

Here is a link I found while I was researching a good fix.
It's a very good step by step process.

http://inetogether.net/jaguar/041101.php

[BikerTrash]

I used a tank liner one on a bike, I think the stuff was called "cream" I took my time and folowed the directions to the letter and let everything cure after I coated the insides of the tank, and I had no trouble with it for two years after doing it. I sold the bike and as far as I know it is still fine.

My Buddy rushed his job and the sealant separated from the inside of the tank in I believe 5 months.

How long it lasts all depends on the quality of the work done, if it is done right it should last.

[spacoli]

I did not rush it. The directions said to let it dry for 96 hours (four days), I let it dry an extra 12 hours and had a hair dryer (no heat) circulating air through the tank. I also left a halogen work light pointed towards the tank to keep the minimal recommended 72* drying temp.

I didn't want to have to remove the bed and tank again.