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02-05-2015, 12:17 PM
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#1 |
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Registered User
 
Join Date: Jun 2014
Location: Houston, Texas
Posts: 722
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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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1972 Chevrolet C20 Cheyenne Custom Camper LWB - 350 / 330 HP GM Crate - TH350 / Mild Shift Kit - Dark Blue / Medium Blue - Paint Code 559 |
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02-05-2015, 12:37 PM
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#2 |
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Senior Member
Join Date: Nov 2001
Location: Rapid City, SD
Posts: 2,281
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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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My Trucks: 1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project 1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver 1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck 1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck 2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White 2002 Chevrolet 1500HD 4x4 Crew Cab 6.0L 4L80E Red |
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02-05-2015, 12:41 PM
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#3 |
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Registered User
Join Date: Oct 2013
Location: Wisconsin
Posts: 162
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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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02-05-2015, 01:24 PM
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#4 | |
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Registered User
Join Date: Jun 2014
Location: Houston, Texas
Posts: 722
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Re: Fuel Pressure Regulator Leaking
Quote:
 You helped me on both my issues today LOL
__________________
1972 Chevrolet C20 Cheyenne Custom Camper LWB - 350 / 330 HP GM Crate - TH350 / Mild Shift Kit - Dark Blue / Medium Blue - Paint Code 559 |
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02-05-2015, 01:25 PM
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#5 | |
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Registered User
Join Date: Jun 2014
Location: Houston, Texas
Posts: 722
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Re: Fuel Pressure Regulator Leaking
Quote:
Thanks Ed!
__________________
1972 Chevrolet C20 Cheyenne Custom Camper LWB - 350 / 330 HP GM Crate - TH350 / Mild Shift Kit - Dark Blue / Medium Blue - Paint Code 559 |
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02-05-2015, 06:37 PM
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#6 |
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Registered User
Join Date: Feb 2013
Location: alvin, texas
Posts: 622
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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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1967 C10 lwb two tone, 305 & rat fink style floor shifted 700r4, 20" steelies 2004 2500HD utility bed aka Brutus |
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02-05-2015, 06:53 PM
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#7 | |
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Registered User
Join Date: Jun 2014
Location: Houston, Texas
Posts: 722
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Re: Fuel Pressure Regulator Leaking
Quote:
__________________
1972 Chevrolet C20 Cheyenne Custom Camper LWB - 350 / 330 HP GM Crate - TH350 / Mild Shift Kit - Dark Blue / Medium Blue - Paint Code 559 |
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