Anti-siphon spring???

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Rogerdodger

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Here is a picture of my tank filler tube and another of what is inside. This is a 68 dart. Did some of these cars come with anti siphon devices or did someone jam a spring in the gooseneck? I can not find any reference of this anywhere.
 
Not from the factory, they didn't.
But that was a common addition back in the bad old days of oil embargos and blocks-long lines at the filling stations...
 
Not from the factory, they didn't.
But that was a common addition back in the bad old days of oil embargos and blocks-long lines at the filling stations...
That's what I suspected. I'm getting ready to replace the sending unit & probably the tank as it is leaking. Found it there when, you guessed it, tried to siphon the gas. Thanks for the info, much appreciated.
 
I bought a new filler neck recently and it came with a spring in it, then I had to take it back out when I had to siphon the tank.
 
Surprised someone put one in a Dart — a locking cap would have been simpler. My Barracuda had one of those springs because of the flip-top cap. It was maddening — you could only fill it by manually feathering the pump at the lowest possible flow rate. I bought a new neck just to get rid of it — it was designed to be impossible to remove.
 
Locking cap is awesome! Had one since buying in 1984.

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AND NOW YET ANOTHER ANNOYING STORY from the old days. Back in the 80's I worked for a large auto parts store here. We had had some gas thefts in town, and a frail sweet old lady came in. She wanted a locking cap, and we were selling those springs as well--had a display on the counter, and she grabbed one. She asked me "if there was anything else" she could do to prevent fuel theft.

Without thinking (as usual) I opened my big mouth. "Well no matter what you do, I guess they can crawl under there and drive a nail into the tank"

She looked depressed, paid the bill and thanked me and left.
 
My Dart has one as well .
Who knows best way to remove it ?
Look under the lip on the filler, through the slots and you'll see the first coil of the spring. Now use a screwdriver to twist it until you can get to the end of that first coil. Use the same screwdriver and a pair of pliers to pry the spring back until you can get a hold on it and twist it out. Once you get it started it will just unscrew.
 
The sender works fine but it appears to be leaking around the rubber bushing where the wire connects to it. Who refurbishes these senders, anyone know
There are numerous posts about who repairs them Wolf And Son (IIRC) is one name


If you remove the nut holding the black plastic cone on you will find an flat O ring.

Photo "barrowed" from the how to post

The way it goes together.

  1. Bolt
  2. Rheostat holder
  3. Fiber board insulater
  4. (Not shown) sending unit round mounting plate
  5. Flat O ring
  6. Black plastic cone
  7. Lock washer
  8. Nut
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If you are going to replace it I would pull the sender to do it on a bench and be gentle.
 
John Wolf & Company refurbishes sending units, they are located in Willoughby OH. I've had 3 units done by them & they ae dead on. They are not cheap, but are well worth the expense.
 
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