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Old 02-05-2015, 12:17 PM   #1
1972BlueC20
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Fuel Pressure Regulator Leaking

I tried installing an Edelbrock fuel pressure regulator recently because I wanted to get my pressure down to a constant 5.5 PSI since I'm running an Edelbrock # 1406

I got everything hooked up, but all the fittings I just installed were leaking fuel....not gushing but slightly leaking....everything was really tight....I removed the regulator completely from my truck and put everything back the way it was until I can get everything sealed up properly

I'm assuming I need some kind of teflon tape or thread sealer maybe?

Anyone ever had this problem?

Whats the best thing to use for sealing fuel fittings. They are 3/8 NPT
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Old 02-05-2015, 12:37 PM   #2
67 cst swb
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Re: Fuel Pressure Regulator Leaking

With NPT threads, you will always need Teflon tape or "pipe thread dope" paste.
They are a unique tapered thread that requires thread sealant.

http://www.trentonpipe.com/ti_threadformdatachart.html

How to install:
http://www.entegrisfluidhandling.com...ct.aspx?G=1054
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Old 02-05-2015, 12:41 PM   #3
EdSevered
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Re: Fuel Pressure Regulator Leaking

I did the same upgrade (different fuel regulator) to my truck a few months ago. It was recommended to use teflon tape on all the threaded connections, which I did. No leaks. Good fuel pressure control. Some recommend Teflon paste instead. I believe both will work and it is a matter of preference. I find the tape to be easier to work with and provides a neater appearance. Someone will correct me if I am wrong.

-Ed
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Old 02-05-2015, 01:24 PM   #4
1972BlueC20
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Re: Fuel Pressure Regulator Leaking

Quote:
Originally Posted by 67 cst swb View Post
With NPT threads, you will always need Teflon tape or "pipe thread dope" paste.
They are a unique tapered thread that requires thread sealant.

http://www.trentonpipe.com/ti_threadformdatachart.html

How to install:
http://www.entegrisfluidhandling.com...ct.aspx?G=1054
Man you rock

You helped me on both my issues today LOL
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Old 02-05-2015, 01:25 PM   #5
1972BlueC20
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Re: Fuel Pressure Regulator Leaking

Quote:
Originally Posted by EdSevered View Post
I did the same upgrade (different fuel regulator) to my truck a few months ago. It was recommended to use teflon tape on all the threaded connections, which I did. No leaks. Good fuel pressure control. Some recommend Teflon paste instead. I believe both will work and it is a matter of preference. I find the tape to be easier to work with and provides a neater appearance. Someone will correct me if I am wrong.

-Ed

Thanks Ed!
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Old 02-05-2015, 06:37 PM   #6
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Re: Fuel Pressure Regulator Leaking

i prefer the paste, I've had a piece of Teflon tape stick between the needle and seat.
I use gasoila paste you can get it at tractor supply, its used for assembling gas pumps
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Old 02-05-2015, 06:53 PM   #7
1972BlueC20
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Re: Fuel Pressure Regulator Leaking

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Originally Posted by dirtyjim View Post
i prefer the paste, I've had a piece of Teflon tape stick between the needle and seat.
I use gasoila paste you can get it at tractor supply, its used for assembling gas pumps
Thanks man, I'll try to get some of this stuff
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