Leaking gas filler tube on 35

[Coupe35]

I installed a new lead washer on my 35 gas filler tube but it still leaks. Is there a good sealant that I can put on the lead washer to keep it from leaking? I cleaned all the threads real good so I know it’s not because of that and got good leverage on the wrench for a tight fit, I know somebody suggested using O ring but I would rather stick with the lead washer. Any ideas.

[al pa.]

I have no personal knowledge on this assembly,but I might suggest checking the washer for high spots,or shiny spots where it may have made contact with the mating parts,and shaving a little material off,so the low spot might make contact.It might need to be marked,and reinstalled the same clock position,in case the mating parts are deformed,instead of the washer being deformed.Hope it makes sense,even if a stupid idea.

[35 rancho]

I have a 35 truck and I just could not bring myself to spend $8 on a lead gasket!! I took some plumbing soldier and made one. Closed the ends with soldier iron. Made sure the fill tube and tank treads super clean, dry fitted a couple times to make sure it would bottom out, lubed with oil and haven't had any problem. Some how your gasket is not sealing. If your tank sat empty for a while some rust may be under the lead gasket. al pa sounds right on. It won't be right till you do it three times. Good luck .

[Matt in Alameda]

I looked at that $8.00 ( what a ripoff) lead washer and put it back in the drawer..it has a limited amount of forgiveness...and I put in a neoprene O ring which has plenty of forgiveness. I know a guy that used 3 different lead washers and sealer and finally put in an O ring..that was 12 years ago, and he hasn't had a leak yet.....Matt in Alameda

[bbrocksr]

Originally Posted by Coupe35

I installed a new lead washer on my 35 gas filler tube but it still leaks. Is there a good sealant that I can put on the lead washer to keep it from leaking? I cleaned all the threads real good so I know it’s not because of that and got good leverage on the wrench for a tight fit, I know somebody suggested using O ring but I would rather stick with the lead washer. Any ideas.

Look for a rust hole in the tube just above the flange for the lead washer. You can't see it from the outside because it is inside the nut.
Bill

[Lawson Cox]

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I tried the O ring and it did not work, neither did one lead washer. I put two lead washers on and snugged it down good, then took a light hammer and tapped a few times on the handle of the spanner wrench. No leaks.

Oh, the slots on the screw in sleeve were realy boogered up, so I took it to a machine shop and had them drill some round holes all around the sleeve, just the size to fit my spanner wrench. Worked wonders and could really get a firm purchase on the sleeve. Didn't have enough room to get a spanner wrench on to tighten it up before.

[FL&WVMIKE]

A 2" "O" ring worked for me. If the new gas eats it up, I'll put in another one.
MIKE