wish2fish Posted January 24, 2014 Share Posted January 24, 2014 Hi raiders, I have a couple of portable reserve tanks for unleaded fuel. The tanks have a threaded hole in them for which to screw in the hose attachment. The problem is the attachments don't seem to tighten up in the threaded hole. I have tried using thread tape and silicone but they still leak when the tank is under pressure. I glued them in using hot glue from my rod repair kit and it set the fitting in nice and firm. Until today when I filled them up the glue reacted to the petrol and the fittings came loose and started leaking again. Any suggestions what else to use? Cheers. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Testlab Posted January 24, 2014 Share Posted January 24, 2014 Those tanks have had it. Get some new ones, they aren't very expensive. Link to comment Share on other sites More sharing options...
wish2fish Posted January 24, 2014 Author Share Posted January 24, 2014 Testlab, they have been like that since new. They originally came with a o ring but the fitting wouldn't tighten enough to seal with it. I have found it hard to find the same size and shape tank as these ones. They are perfect size to fit under the shelf of the transom. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Croydon Posted January 24, 2014 Share Posted January 24, 2014 I'd be very concerned about fuel vapour escaping from the leak under pressure. Just a bomb waiting to go off. I wouldn't risk it............ Good luck with it. Dave Link to comment Share on other sites More sharing options...
zook2001 Posted January 25, 2014 Share Posted January 25, 2014 All my tanks have leaked from new, need to use Stage Jointing Paste it will fix the problem , forget hot melt as petrol dissolves or turpentine dissolves it easy. Link to comment Share on other sites More sharing options...
Geoff Posted January 25, 2014 Share Posted January 25, 2014 (edited) Am I correct in saying the holes are at or near the bottom of the tank?? If so , have you considered sealing them off & installing a fitting at the top of the tank or through the filler hole with a hose that goes from the fitting to the bottom of the tank. Or , instaling a breather fitting to the top of the tank to relieve the pressure Bias / Whitworths have a range of fuel fitting available which could be worth checking out. Also , check out the locktite range of products , they may have a suitable sealer Geoff Edited January 25, 2014 by Geoff Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted January 25, 2014 Share Posted January 25, 2014 i would get new tanks if they were like this from new than there cheap quality, the fitting should fit snug but u dont over do it or you'll just strip the plastic threads if your dead set on keeping those tanks get the holes filled with plastic weld than drill and re-tap the holes Link to comment Share on other sites More sharing options...
wish2fish Posted January 25, 2014 Author Share Posted January 25, 2014 Thanks for the feedback guys. Zook, where would I buy stage jointing paste from? I bought these tanks from bias boating. The fitting that needs glueing is at the top of the tank. Seems a shame to throw away before at least trying to repair. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Fab1 Posted January 26, 2014 Share Posted January 26, 2014 You can buy stag jointing paste from any automotive store, have been using it for years. Sent from my GT-I8730T using Tapatalk Link to comment Share on other sites More sharing options...
wish2fish Posted January 26, 2014 Author Share Posted January 26, 2014 Thanks fab1, judging by the label it will do the job. Cheers. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Fab1 Posted January 26, 2014 Share Posted January 26, 2014 Just rough up around the hole with some emery paper and make sure the tank and fitting are free from dust and are completly dry. (Wipe with metho) Cheers. Sent from my GT-I8730T using Tapatalk Link to comment Share on other sites More sharing options...
wish2fish Posted January 26, 2014 Author Share Posted January 26, 2014 Might be a bit hard to rough up as the hole is threaded. Will that matter? Also how long does it take to set? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Fab1 Posted January 26, 2014 Share Posted January 26, 2014 No just make sure it's clean and dry, roughing up helps with adhesion to smoother surfaces.Give it atleast 24hrs to cure before filling tank and check for leaks. Sent from my GT-I8730T using Tapatalk Link to comment Share on other sites More sharing options...
wish2fish Posted January 27, 2014 Author Share Posted January 27, 2014 Hey Fab1, I applied the stag today. Does this paste go hard or does it remain flexible? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Fab1 Posted January 28, 2014 Share Posted January 28, 2014 Should remain semi flexible. Sent from my GT-I8730T using Tapatalk Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted January 28, 2014 Share Posted January 28, 2014 something to think about a leak in the fuel line can seize your engine, not from fuel coming out but rather the engine sucking air in thru the leak Link to comment Share on other sites More sharing options...
wish2fish Posted February 5, 2014 Author Share Posted February 5, 2014 Just checking back with results. The stag paste seemed to do the job until pressure built up in the tank and the fumes managed to work its way through the join. I tried a military grade 2 part epoxy that a mate gave me and so far it has held. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Blood Knot Posted February 5, 2014 Share Posted February 5, 2014 You can buy stag jointing paste from any automotive store, have been using it for years. Sent from my GT-I8730T using Tapatalk Plus 1 for Stag have used it for years. Cheers Blood Knot Link to comment Share on other sites More sharing options...
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