Can You Use Teflon Tape on Fuel Lines

Do y'all seal, or put teflon tape on your fuel pump fittings? #1944951 11/04/15 11:07 AM 11/04/15 xi:07 AM
Joined: Jan 2003 Posts: 7,456 Albany, NY 67SATisfaction OP The member whose proper name is actually Fine art
OP The fellow member whose proper noun is actually Art Joined: Jan 2003 Posts: 7,456 Albany, NY	Guys, Gals, I get a persistent piddling drip of fuel from the brass nipple that screws into the fuel pump housing. I've tightened it, and it seems meliorate, but even so a bit of moist fuel comes past the threads. Do I keep tightening the brass plumbing fixtures, or do you guys use that plumber's teflon record or some kind of sealant at these fittings? I believe I have a small jar of white goop sealant from NAPA that is fuel resistant. Thank you, - Art 1965 Satellite hardtop 361/2bbl, console 727, open up 2.76 1967 Satellite convert 383/4bbl, column 727, open 3.23 1975 Maserati Bora, US spec 4.9L DOHC hemi V8, v-spd ZF man 1977 Maserati Khamsin, Euro spec 4.9L DOHC hemi V8, v-spd ZF homo 1982 Alfa Romeo GTV6, 2.5L SOHC hemi V6, 5-spd man transaxle 2007 Aston Martin DB9, vi.0L DOHC V12, 6spd homo transaxle

Re: Do you seal, or put teflon tape on your fuel pump fittings? [Re: 67SATisfaction] #1944959 11/04/fifteen 11:22 AM 11/04/15 11:22 AM
Moparts Torchbearer Joined: Apr 2012 Posts: eighteen,880 -	Seal-All...

Re: Do you seal, or put teflon tape on your fuel pump fittings? [Re: 67SATisfaction] #1944976 11/04/fifteen 11:55 AM eleven/04/fifteen eleven:55 AM
Joined: Apr 2006 Posts: 3,675 Akron, Ohio U.Southward.A. roadhazard master
master Joined: April 2006 Posts: iii,675 Akron, Ohio United statesA.	I'd pull the line off, put a flaring tool on it to "adjust" the flare. Yous shouldn't need to creepo down the fitting to seal that, JMO

Re: Do you seal, or put teflon record on your fuel pump fittings? [Re: roadhazard] #1944982 11/04/xv 12:13 PM eleven/04/15 12:xiii PM
Joined: Nov 2003 Posts: 35,949 Lincoln Nebraska RapidRobert Circle Track
Circle Track Joined: Nov 2003 Posts: 35,949 Lincoln Nebraska	What Roadhazard said, take the fitting off & inspect the cone interface on both sides which is where it seals. reflare it slightly then use some sealant on the threads to accept intendance of any modest seepage from a less than perfect wedlock but considering that it might become worse on down the line plus the severity of a fuel leak, I would probable cutting/reflare the line and or get a new fitting specially if it was on the pressure side going to the carb live every 24 hr block of time like information technology's your last mean solar day on earth

Re: Practise yous seal, or put teflon record on your fuel pump fittings? [Re: 67SATisfaction] #1945003 eleven/04/15 01:17 PM 11/04/fifteen 01:17 PM
Joined: Feb 2003 Posts: 21,318 Manitoba, Canada DaytonaTurbo Too Many Posts
Too Many Posts Joined: Feb 2003 Posts: 21,318 Manitoba, Canada	Throw your teflon tape in to the garbage. With the poor quality of today'south asian made fittings, the teflon tape doesn't cut it. Permatex Thread Sealant is what you lot want. All the heavy duty shops, including ours, use it for everything.

Re: Do you seal, or put teflon tape on your fuel pump fittings? [Re: 67SATisfaction] #1945007 xi/04/15 01:21 PM xi/04/15 01:21 PM
Joined: Oct 2006 Posts: 7,157 Iowa burdar Owen'south Dad
Owen's Dad Joined: Oct 2006 Posts: 7,157 Iowa	I become a persistent petty drip of fuel from the contumely nipple that screws into the fuel pump housing. It seems similar he'due south saying the fitting is leaking at the fuel pump....not the line/plumbing equipment connection. Isn't the fuel pump pipe thread? Pipe thread should seal itself shouldn't it? I wonder if the plumbing fixtures has a small crack in information technology?

Re: Do you seal, or put teflon record on your fuel pump fittings? [Re: 67SATisfaction] #1945009 eleven/04/15 01:22 PM eleven/04/xv 01:22 PM
Joined: Jan 2003 Posts: 11,621 Omaha Ne TJP I Live Here
I Live Here Joined: Jan 2003 Posts: xi,621 Omaha Ne	Get-go thing to institute is are you dealing with pipe threads or an inverted flare plumbing fixtures. Pipe threads require sealant, several options are available. Inverted flare fittings do non require sealant.

Re: Do you seal, or put teflon tape on your fuel pump fittings? [Re: TJP] #1945051 11/04/fifteen 02:52 PM xi/04/15 02:52 PM
Joined: Feb 2005 Posts: 28,308 Cincinnati, Ohio Challenger 1 Too Many Posts
Too Many Posts Joined: February 2005 Posts: 28,308 Cincinnati, Ohio	First matter to constitute is are you dealing with pipe threads or an inverted flare plumbing fixtures. Pipe threads require sealant, several options are available. Inverted flare fittings do not require sealant. This^^^^^ And utilise pipe dope on tapered pipage threads effectually fuel systems, not record. Because tape will wick fuel(turns yellow) and is hell if you e'er remove the fitting because little pieces of teflon tape will be everywhere and hard to keep out of your fuel organization. And if you employ the tape wrong to begin with you lot will take tape in your fuel organization from the get go. Avoid teflon tape effectually fuel systems is my advise.

Re: Exercise you seal, or put teflon record on your fuel pump fittings? [Re: burdar] #1945053 eleven/04/xv 02:54 PM eleven/04/fifteen 02:54 PM
Joined: Feb 2005 Posts: 28,308 Cincinnati, Ohio Challenger ane Too Many Posts
Too Many Posts Joined: February 2005 Posts: 28,308 Cincinnati, Ohio	I go a persistent little drip of fuel from the brass nipple that screws into the fuel pump housing. It seems like he's saying the fitting is leaking at the fuel pump....not the line/fitting connection. Isn't the fuel pump pipe thread? Piping thread should seal itself shouldn't it? I wonder if the fitting has a small crack in it? Nope pipe fittings demand a thread sealer, even brass fittings do.

Re: Practice you seal, or put teflon tape on your fuel pump fittings? [Re: Challenger ane] #1945081 11/04/15 03:58 PM 11/04/15 03:58 PM
Joined: January 2008 Posts: 2,561 None 71rm23 main
master Joined: Jan 2008 Posts: 2,561 None	I get a persistent little drip of fuel from the brass nipple that screws into the fuel pump housing. It seems like he's maxim the plumbing fixtures is leaking at the fuel pump....not the line/fitting connection. Isn't the fuel pump pipe thread? Pipe thread should seal itself shouldn't information technology? I wonder if the fitting has a small crack in it? Nope pipage fittings demand a thread sealer, fifty-fifty contumely fittings practice. I concur!

Re: Practise you seal, or put teflon tape on your fuel pump fittings? [Re: 67SATisfaction] #1945144 11/04/15 05:31 PM eleven/04/fifteen 05:31 PM
Joined: Oct 2015 Posts: 653 Michigan BlueRacer69 mopar
mopar Joined: Oct 2015 Posts: 653 Michigan	I have always used pipe dope on my fuel line plumbing equipment, with adept success. The same stuff plumbers use. I just purchase it at my local hardware store.

Re: Do you lot seal, or put teflon tape on your fuel pump fittings? [Re: 67SATisfaction] #1945152 11/04/15 05:39 PM 11/04/fifteen 05:39 PM
Joined: January 2003 Posts: 12,825 medico mopars4ever I Alive Hither
I Live Here Joined: Jan 2003 Posts: 12,825 md

Re: Practice you seal, or put teflon record on your fuel pump fittings? [Re: burdar] #1945285 11/04/15 09:31 PM 11/04/xv 09:31 PM
Joined: January 2003 Posts: 7,456 Albany, NY 67SATisfaction OP The member whose name is actually Art
OP The fellow member whose proper name is actually Art Joined: Jan 2003 Posts: vii,456 Albany, NY	Thanks for your responses - I get a persistent lilliputian baste of fuel from the brass nipple that screws into the fuel pump housing. It seems like he'due south saying the plumbing equipment is leaking at the fuel pump....not the line/plumbing equipment connection. Isn't the fuel pump pipe thread? Pipe thread should seal itself shouldn't it? I wonder if the fitting has a small crack in it? Yes. Information technology's the contumely plumbing fixtures hither: The leak appears to exist getting past the brass nipple's threads where information technology screws into the metal housing of the fuel pump. But Thanks for your responses - What I have away here is I can safely try using some standard parts-shop sealant to try and stop this. NOT teflon record. I'll be wearing a new cologne tonight! - Art Concluding edited by 67SATisfaction; eleven/04/fifteen 09:34 PM. 1965 Satellite hardtop 361/2bbl, panel 727, open 2.76 1967 Satellite convert 383/4bbl, column 727, open 3.23 1975 Maserati Bora, US spec four.9L DOHC hemi V8, 5-spd ZF man 1977 Maserati Khamsin, Euro spec 4.9L DOHC hemi V8, 5-spd ZF man 1982 Alfa Romeo GTV6, two.5L SOHC hemi V6, five-spd human transaxle 2007 Aston Martin DB9, six.0L DOHC V12, 6spd human transaxle

Re: Do you seal, or put teflon tape on your fuel pump fittings? [Re: 67SATisfaction] #1945300 11/04/15 09:47 PM 11/04/15 09:47 PM
Joined: Aug 2013 Posts: 152 usa smos001 member
member Joined: Aug 2013 Posts: 152 united states	I was told never to use Teflon tape. that information technology can break up and get into the fuel system. Merely, I know people take washed it. I use ARP thread sealer. I also had an event with a leaky fuel pump fitting. It ended upward that the soft metallic housing had bad threads. So I sent it back and pinnacle sent me a new pump. I so used a brand new fitting and lightly torqued the plumbing fixtures with thread sealer on to the pump. no leaks.

Re: Practice you seal, or put teflon tape on your fuel pump fittings? [Re: 67SATisfaction] #1945304 11/04/fifteen 09:50 PM 11/04/15 09:50 PM
Joined: Feb 2005 Posts: 28,308 Cincinnati, Ohio Challenger 1 Too Many Posts
Too Many Posts Joined: Feb 2005 Posts: 28,308 Cincinnati, Ohio	Yes any pipe dope at any store will seal gasoline and most everything else. Some are not hardening is all, they all work for gasoline, IMO.

Re: Do you seal, or put teflon tape on your fuel pump fittings? [Re: screamindriver] #1945395 11/04/15 eleven:38 PM eleven/04/15 11:38 PM
Joined: May 2012 Posts: i,483 Due south Bend John Brown pro stock
pro stock Joined: May 2012 Posts: 1,483 Southward Bend	I've ever used permatex #2 on whatsoever threads that needed sealing... Yep, fifty-fifty had to apply it on the cheap imported water pipes when I replumbed my water heater. July 19th should be "Drive Like Rockford Day". R.I.P. Jimmie.

Re: Practice you seal, or put teflon tape on your fuel pump fittings? [Re: 67SATisfaction] #1945399 11/04/15 eleven:49 PM 11/04/15 11:49 PM
Joined: Jul 2007 Posts: 189 TN Hoosier jb500 member
fellow member Joined: Jul 2007 Posts: 189 TN Hoosier	NPT threads seal on a metal to metal contact and PTFE tape or paste provides lubrication.

Re: Do you seal, or put teflon record on your fuel pump fittings? [Re: 67SATisfaction] #1945402 11/04/fifteen 11:fifty PM 11/04/xv eleven:l PM
Joined: Jan 2003 Posts: 42,709 Spokane Washington ScottSmith_Harms Mr Wizzard
Mr Wizzard Joined: January 2003 Posts: 42,709 Spokane Washington	Take it from a carb guy. NEVER use Teflon tape on anything fuel related. Equally mentioned by roadhazard and rapidrobert, the all-time is always a mechanical seal. Whatever type of sealant is a time to come potential leak and possible contaminant that can enter your fuel system and cause further problem.

Re: Do you seal, or put teflon tape on your fuel pump fittings? [Re: 67SATisfaction] #1945420 11/05/fifteen 12:12 AM 11/05/15 12:12 AM
Joined: Jul 2007 Posts: 189 TN Hoosier jb500 member
fellow member Joined: Jul 2007 Posts: 189 TN Hoosier	You don't have to fright the PTFE tape. Keep the first few threads clear and only one or two layers. Don't dorsum off the fitting once tight....no tape will get into the system. Advice from a Certified Hydraulic Hose and Fitting guy.

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