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Teflon ape on fuel line fittings #2625180
02/23/19 06:45 PM
02/23/19 06:45 PM
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robertop Offline OP
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I might be just full of bull, but I seem to remember reading somewhere that you don't use teflon tape on fuel line fittings, and the reason escapes me. Do you think this is only rubbish?

Re: Teflon ape on fuel line fittings [Re: robertop] #2625182
02/23/19 06:48 PM
02/23/19 06:48 PM
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Morrow, OH
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Originally Posted By robertop
I might be just full of bull, but I seem to remember reading somewhere that you don't use teflon tape on fuel line fittings, and the reason escapes me. Do you think this is only rubbish?


I would never use teflon tape on fuel fittings. If it breaks off (including during removal) it can plug up small orifices in the fuel system including the carb.

A good sealant (I use Loctite PST teflon sealant) is recommended.


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Re: Teflon ape on fuel line fittings [Re: robertop] #2625211
02/23/19 08:21 PM
02/23/19 08:21 PM
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Originally Posted By robertop
I might be just full of bull, but I seem to remember reading somewhere that you don't use teflon tape on fuel line fittings, and the reason escapes me. Do you think this is only rubbish?


The first thing one should do is establish what type of fitting you are referring to. Inverted flare as well as AN flared type fittings require no sealant.

The only fitting that does is pipe type thread which is a tapered thread. There are several different acceptable sealants that can be used. The primary concern with the tape is it sometimes leaves strands behind that can find there way to the fuel system/ carburetor
twocents beer

Re: Teflon ape on fuel line fittings [Re: robertop] #2625220
02/23/19 08:48 PM
02/23/19 08:48 PM
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Rittman Ohio
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I use liquid Teflon sealer on all my pipe thread fittings. Just a dab on the clean dry threads and you will be leak free. You can get it from any parts store or even the hardware stores carry it.

Gus beer


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Re: Teflon ape on fuel line fittings [Re: fourgearsavoy] #2625222
02/23/19 09:00 PM
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mopargem Offline
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If you were to use teflon tape, it needs to be the yellow type which is resistant to fuel

Re: Teflon ape on fuel line fittings [Re: mopargem] #2625237
02/23/19 09:49 PM
02/23/19 09:49 PM
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Originally Posted By mopargem
If you were to use teflon tape, it needs to be the yellow type which is resistant to fuel


Yellow Teflon tape is designed for natural gas and propane lines, not gasoline.

Re: Teflon ape on fuel line fittings [Re: Pacnorthcuda] #2625248
02/23/19 10:05 PM
02/23/19 10:05 PM
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Originally Posted By Pacnorthcuda
Originally Posted By mopargem
If you were to use teflon tape, it needs to be the yellow type which is resistant to fuel


Yellow Teflon tape is designed for natural gas and propane lines, not gasoline.
iagree
White for liquid gasoline or diesel scope
OP, do NOT use any sealant on any AN fitting other than the NPT ends twocents

Last edited by Cab_Burge; 02/23/19 10:06 PM.

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Re: Teflon ape on fuel line fittings [Re: Pacnorthcuda] #2625274
02/24/19 12:08 AM
02/24/19 12:08 AM
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Originally Posted By Pacnorthcuda
Originally Posted By mopargem
If you were to use teflon tape, it needs to be the yellow type which is resistant to fuel


Yellow Teflon tape is designed for natural gas and propane lines, not gasoline.

Oh no my bad sry. I’ve beem wrong all these years

Re: Teflon ape on fuel line fittings [Re: mopargem] #2625317
02/24/19 03:29 AM
02/24/19 03:29 AM
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Originally Posted By mopargem
Originally Posted By Pacnorthcuda
Originally Posted By mopargem
If you were to use teflon tape, it needs to be the yellow type which is resistant to fuel


Yellow Teflon tape is designed for natural gas and propane lines, not gasoline.

Oh no my bad sry. I’ve beem wrong all these years


Good thing you never had a 'splosion!


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Re: Teflon ape on fuel line fittings [Re: Sunroofcuda] #2625524
02/24/19 04:57 PM
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Per the following there really isn't a "CLEAN" answer regarding the use of the yellow tape. Seems there are different types depending on the usage. NICE!!!! beer

YELLOW TEFLON TAPE ARTICLE

Re: Teflon ape on fuel line fittings [Re: robertop] #2625536
02/24/19 05:27 PM
02/24/19 05:27 PM
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GM used white Teflon tape for years on Q-Jet fuel inlets, not as a sealant, but as a friction reducer, it allowed the flare nut to be tightened sufficiently without rounding the flats. Paul

Re: Teflon ape on fuel line fittings [Re: iapco103] #2625600
02/24/19 08:39 PM
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For flare fittings, I always used a little grease on the back of the tube flare, and on the nut flare and threads.

Re: Teflon ape on fuel line fittings [Re: BSB67] #2625845
02/25/19 02:06 PM
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Originally Posted By BSB67
For flare fittings, I always used a little grease on the back of the tube flare, and on the nut flare and threads.


anti seize is my preferred stuff to use.
beer

Re: Teflon ape on fuel line fittings [Re: iapco103] #2625910
02/25/19 04:14 PM
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Originally Posted By iapco103
GM used white Teflon tape for years on Q-Jet fuel inlets, not as a sealant, but as a friction reducer, it allowed the flare nut to be tightened sufficiently without rounding the flats. Paul
If GM had flared the fuel line carb end properly they wouldn't have needed to do that work


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Re: Teflon ape on fuel line fittings [Re: Cab_Burge] #2626068
02/25/19 09:30 PM
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white Teflon turns clear in gas and when a little piece gits in a needle and seat you can't see it and will cause you to cuss a lot while trying to figure out why it still floods.

Re: Teflon ape on fuel line fittings [Re: Cab_Burge] #2626087
02/25/19 10:31 PM
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Originally Posted By Cab_Burge
If GM had flared the fuel line carb end properly they wouldn't have needed to do that work


iagree I wasn't going to start the debate but seriously doubt they used the tape twocents beer

Re: Teflon ape on fuel line fittings [Re: robertop] #2626119
02/25/19 11:53 PM
02/25/19 11:53 PM
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I've been using the yellow on fuel (gasoline) fittings for many years, including adding to an AN fitting that leaked a bit.

It may not have been made for gasoline but I've never an issue with it failing yet.

My roll of yellow is so old there's no label on it anymore, but it was whatever was at Home Depot at the time.

Re: Teflon ape on fuel line fittings [Re: robertop] #2626187
02/26/19 02:24 AM
02/26/19 02:24 AM
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I remember a cartoon called the GRAPE Ape but Teflon Ape is one I've never heard of.

Re: Teflon ape on fuel line fittings [Re: Kern Dog] #2626241
02/26/19 11:11 AM
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robertop Offline OP
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Oh, it's a similar character, only a very slippery one! So I forgot to check the title, but remember nobody likes a wise guy.....just joking, I deserve that.

Re: Teflon ape on fuel line fittings [Re: Kern Dog] #2626316
02/26/19 02:42 PM
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Originally Posted By Frankenduster
I remember a cartoon called the GRAPE Ape but Teflon Ape is one I've never heard of.


FYI, The Teflon APE is the one that gets loose in your fuel system or starts a fire under the hood grin beer

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