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Fuel leak....

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Old Jan 1, 2010 | 07:10 PM
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Default Fuel leak....

what are u guys useing to seal up ur fuel systems? any special thread sealant?? to prevent leaks...
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Old Jan 1, 2010 | 07:14 PM
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No sealant on AN fittings and I use teflon tape on NPT fittings.

Many people say dont use tape, but after being taught the correct way to wrap it by my brother who uses it in the gas pipeline business, its much better and less messy than the paste, IMO.

What exactly is your problem?
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Old Jan 1, 2010 | 08:10 PM
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Loctite 545 for prevention, but a proper designed and assembled system shouldn't leak.

Last edited by Will at RSI; Jan 1, 2010 at 08:12 PM.
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Old Jan 1, 2010 | 10:02 PM
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Originally Posted by Corvette-Chris
No sealant on AN fittings and I use teflon tape on NPT fittings.

Many people say dont use tape, but after being taught the correct way to wrap it by my brother who uses it in the gas pipeline business, its much better and less messy than the paste, IMO.

What exactly is your problem?
well, my schrader valve extention thingy that my fuel pressure sending unit hooks up to, there is an NPT port that wont stay sealed... I have 2 1/8 NPT ports 1 for my sending unit and the other is capped off.. the one thats capped off is not sealing....

ill take a pic and post it up tomm
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Old Jan 2, 2010 | 09:36 AM
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I use sealant on all of the NPT fittings.. you will likely not get those to seal.
Nothing on AN fittihgs though.
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Old Jan 2, 2010 | 03:54 PM
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Originally Posted by BLOWNZO6
I use sealant on all of the NPT fittings.. you will likely not get those to seal.
Nothing on AN fittihgs though.
its funny cus i never had a problem before? i still need to take to pic... then mabe u guys could give me sum ideas?
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Old Jan 2, 2010 | 06:05 PM
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here is the pic i promised.... sorry its kinda ****ty, but it gives u an idea... the top NPT fitting wont seal, even w/ thread sealant
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Old Jan 2, 2010 | 07:59 PM
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it will prob never seal with that kind of fitting, just not enuff threads to seal. i would suggest double male fitting be inserted there with a proper female cap fitting. or better yet a fitting with correct number of holes if you can find one.
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Old Jan 2, 2010 | 08:12 PM
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Originally Posted by excessive81
it will prob never seal with that kind of fitting, just not enuff threads to seal. i would suggest double male fitting be inserted there with a proper female cap fitting. or better yet a fitting with correct number of holes if you can find one.
Its funny u say that, cus it never leaked before
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Old Jan 2, 2010 | 10:09 PM
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Maybe try some red loctite if you dont ever need to use that port again, the aluminum allen will most likely strip if you try to take it out with the loctite on there.
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Old Jan 2, 2010 | 10:12 PM
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Originally Posted by bullitt4110
Maybe try some red loctite if you dont ever need to use that port again, the aluminum allen will most likely strip if you try to take it out with the loctite on there.
ill give it a try, i dont need that port anyways... ill give it a shot and report back
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Old Jan 3, 2010 | 08:22 PM
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what if i have it welded shut? my local welder can do it... he did my schrader valve for me and it worked out... what u guys think?
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Old Jan 3, 2010 | 11:40 PM
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It's hard to tell by the pic that you posted what part you are talking about.One thing for sure.If you tried to seal it with thread sealant and that didn't work then there is a problem with the thread or type of plug you are using.It's not the type of sealant you are using and even if you do get it to seal with some other kind of sealant I wouldn't trust it.Especially when you are working with gas under pressure!Take it to a hydraulic shop and show the guy what you are doing.If they know their stuff they should be able to fix you up with the proper fitting.
Good luck.
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