BandY Posted October 9, 2015 Report Share Posted October 9, 2015 Just looking for some input. I've had the plug out, and I've thoroughly cleaned it, and then made a gasket out of a thin gasket material. Can't remember the thickness, but like thin cardboard that is safe to use on fuel applications. Anyhow, it's leaked ever since. I bought some thicker material to us, and it's cork sheeting. Also safe for use with fuel (it claims). I plan on giving the cork a try, as soon as my fuel gage gets lower. Does anyone use anything specific for this? The factory gasket just seemed like black goop. Similar to a mastic. Link to comment Share on other sites More sharing options...
ucw458 Posted October 9, 2015 Report Share Posted October 9, 2015 It's been a few years since I've taken that plug out, but I remember the factory gasket being an o-ring. The black goop may have been a PO using RTV or something like that. Clean your drain plug and I bet you will find the o-ring groove. Link to comment Share on other sites More sharing options...
BandY Posted October 9, 2015 Author Report Share Posted October 9, 2015 Well, both of my current cars are 86s. I've had both plugs out, somewhat recently, and both had similar gaskets on the flat that mates with the tank. One had goop on it, and the other just had the paper-type gasket. The thread goes all the way to the flat, and there's no groove for an o-ring. Possibly newer models had a different format. Later today, I'm going to try the cork gasket, with Permatex on each side. If that fails, I plan on layering the other material three or four times, with sealant in between. Link to comment Share on other sites More sharing options...
BC_99 Posted October 9, 2015 Report Share Posted October 9, 2015 Thin rubber or viton sheeting would be my suggestion. BC_99 Link to comment Share on other sites More sharing options...
scott87star Posted October 9, 2015 Report Share Posted October 9, 2015 I took my plug out to get gas for my generator after Hurricane Ike, the gasket was just a thin piece of plastic, almost clear, and it was a flange type. Link to comment Share on other sites More sharing options...
DieHARDmitsu. Posted October 10, 2015 Report Share Posted October 10, 2015 Gas eats silicone and the 10% ethanol is also bad for some materials. I use Felpro Grey gasket paper on mine. Used a razor to cut a round washer/gasket and tighten it sung. Over tight will rip the paper. So far, its been holding up. Link to comment Share on other sites More sharing options...
techboy Posted October 20, 2015 Report Share Posted October 20, 2015 I've had mine out as well. There's definitely no o-ring on it. Although, it's a shame it wasn't designed that way, probably would be easier to seal it tight. Link to comment Share on other sites More sharing options...
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