Gas line fittings

Bill in NJ said:
Do we still use teflon tape on the fitings to carb etc or is there some thing better now?? Thanks in advance
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They make some yellow teflon tape that I have used with no issue, but normally I use nothing. Ensure that line lines up with hole and tighten before doing any bending. That ensures connection is good.

D
 
Do we still use teflon tape !!GEZZUS dont you people learn,it disolves in gasoline and plugs up the carb. Teflon tape is for plumbers.If you got a leak with out it you need a new line. ken ct.
 
The white tape does, Since finding out about yellow tape (I think made for natural gas) I use that for everything works great on gas, oil, air, etc.


D
 
When you tear apart the carb because it isn't working right and you find shreds of teflon tape plugging up little orifices, you will never use teflon tape again. Except on plumbing.

The flared tubing seals at the flare, not the threads

If you want to put something on threads to be sure you can get them loose again, then use grease or no-seize compound but that still shouldn't be needed on gas lines.
 
I don't use the tape as the "concept" is that pressure from the nut pushes the ferrule onto the seat and seals. Thus, the threads shouldn't need the tape as the sealing isn't directly due to the threads.

Marc
 
"IF" and i say "IF" you are using a orginial gas line the one place it will leak . That little seam line will leak under the ferrule. if its been taken off and on a few times.
 
Yellow Teflon tape is for gasoline. You can read that on the plastic tape housing in very small print. Bought some last night. Not necessary, but good insurance. Looks totally wrong on restored car.
 
Teflon tape is a lubricant not a sealant, it helps reduce friction when assembling tapered pipe threads.

As stated by several members the gas line fittings do not seal at the threads so no sealant is required.
 
TedG said:
Teflon tape is a lubricant not a sealant, it helps reduce friction when assembling tapered pipe threads.

As stated by several members the gas line fittings do not seal at the threads so no sealant is required.
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The box says sealant?

item.php
http://site.innovationestore.com/images/item.php?id=70016012216
 
Bill in NJ said:
Do we still use teflon tape on the fitings to carb etc or is there some thing better now?? Thanks in advance
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It's been said here and numerous times before but bears repeating. Teflon tape and the other forms of pipe dope are for tapered pipe fittings. The only pipe thread in the gas line is the shutoff valve to tank fitting. Teflon tape threads in the carb are a disaster and it should be avoided even at the tank. Non hardening gasket sealer works well at the tank and the remaining compression fittings do not need and should not have sealer.
 
Since were on the subject I just have to ask this is my first Model A (28 tudor) the end of the gas line to the bowl doesn't have a ferrule. I looked in there and it has an O ring. Is that normal? It does leak a little. Nor bad enough to worry about, just enough that it's a little wet and I can smell it when I walk into the garage. What am I supposed to have? thanks Joe
 
Pa Joe said:
Since were on the subject I just have to ask this is my first Model A (28 tudor) the end of the gas line to the bowl doesn't have a ferrule. I looked in there and it has an O ring. Is that normal? It does leak a little. Nor bad enough to worry about, just enough that it's a little wet and I can smell it when I walk into the garage. What am I supposed to have? thanks Joe
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Fuelline.jpg

Fuellines.jpg


I'm not sure if you meant the sediment bowl, or the carb bowl, but here are two pictures showing the two styles of fuel line from the valve to the sediment bowl. My 1928 had a crack and a slow drip, so I had to make a new brass end.

I made the shoulder just a bit thicker for added strength plus the original brass end didn't have the solder flowed to the last half of the fitting. I tinned the steel pipe and made sure the solder flowed all the way to the flare at the end, for added strength.

If you meant the carb bowl, then it should have a brass ferrule.
 
Thanks for showing those pics Tom,this is a mechanical problem.Fix it properly teflon tape will not fix this problem or any others like it. ken ct.
 
The only thing that teflon tape is good for on the fuel lines is that it guarantees that
you will get plenty of experience cleaning out your carburator. If you install the
ferrule and nut system correctly, that's ALL you need. PERIOD! JMHO

Jack
 
I worked on a 1930 Coupe about 8 years ago that leaked at the same fitting I made new for my car. I couldn't get the leak to quit until I tinned the flare. I was working at the owner's house. Had I been home maybe I could have fixed the leak by removing the pipe and sediment bowl and using some fine grinding compound I could have lapped the flare to the bowl, but tinning the flare fixed the leak.
 
Elrod said:
Yellow Teflon tape is for gasoline. You can read that on the plastic tape housing in very small print. Bought some last night. Not necessary, but good insurance. Looks totally wrong on restored car.
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Yellow tape is for natural gas piping. Pink, blue and yellow teflon tape is just thicker than the the white but of the same chemical make up.
Use a drop of oil on flare and compression fittings.
 
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