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General Tech Fuel and teflon tape

BobbyO

Jedi Hopeful
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Does anyone know whether today's gasoline will eat up teflon tape? Received my second fuel pump (see earlier TR3A post on first fuel pump problem) from Moss and the tube nut on the pipe to the carbs would bottom out in the pump bore before completely seating the compression sleeve. I'm guessing I had between 1/32 and 1/64 of play in the pipe allowing fuel to spray onto the engine block. Being familiar with the Model A Ford and how it's water pump is sealed with packing I took teflon tape and wrapped it on the pipe between the tube nut and compression sleeve, taking up the slack. Now I'm concerned about gasoline eventually eating the teflon and spraying on a hot engine as I go down the road. I just got the car on the road and am burning ethanol free gasoline but you never know. I really would like to not have to change the fuel pump again but I also don't want to burn up the car.
 
I know that they make "Yellow" teflon tape for oil and gas lines. I'm not sure about gasoline. It can be bought at most of those home improvment stores.
 
Bob,
Using the teflon tape I was able to stop the leak. The tube nut was not changed and worked with the first fuel pump I received from Moss but I admit I had to really torque it down to ensure it didn't leak. As long as the tape isn't eaten by the gasoline I think I'll be alright. George, I used the usual "white" teflon tape. Didn't know there was a yellow one. I plan to put a strip of the teflon tape in some gasoline and see what happens. It's the ethanol that concerns me in case I inadvertently get some in the car.
 
The real problem is that the newer compression sleeves are not large enough to compress...or even tighten for that matter. A solution to that problem is not so easy. I used sealant also.
 
John, what type sealant did you use, in case the teflon shows a problem after being in gasoline. I put it in this morning and, so far, not showing any problem.
 
AFIK, the only thing that will dissolve teflon is hf acid. But as others have mentioned, the best solution is modifying/making a suitable nut or sleeve.
Berry
 
Off the subject but, after putting gas back in the tank (having drained it to replace the fuel pump) my fuel gauge now goes to full with only half a tank of fuel. It worked fine before draining the tank. Any ideas where I should start looking first?
 
I would probably start by checking what the resistance of the sender is doing. If it goes open circuit at halfway, obviously the sender is bad.
 
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