Leak at Fuel Sender flange
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Tuned
Joined: Jan 2006
Posts: 360
Likes: 78
Leak at Fuel Sender flange
Gentlemen,
I have a 77 F-100, 2-wheel drive, 302 with 3 on the tree. I am battling a leak at the fuel sender flange. I am using a fuel sender unit, gasket, and lock ring from Ecklers.
I was careful to turn the lock ring to full engagement so I am struggling to determine why the leak. (Only when tank is really full to I get the drip, drip, drip.) (I was also careful to make sure the gasket was properly seated.)
The Ecklers gasket and lock ring look a little flimsy, so I am wondering about finding original stuff. (The shop that I wanted to do the RENU process to my original tank through out the original gasket and lock ring when they could not fix my original tank.) I have a new tank.
This F-100 has the 18 gallon tank aft of the rear axle.
Bill,
I try not to take your ability to dig up part numbers and let us know what dealers might have stock on hand. Much obliged if you can work that magic for this gasket and lock ring.
Has anyone else ran into this ??
I have a 77 F-100, 2-wheel drive, 302 with 3 on the tree. I am battling a leak at the fuel sender flange. I am using a fuel sender unit, gasket, and lock ring from Ecklers.
I was careful to turn the lock ring to full engagement so I am struggling to determine why the leak. (Only when tank is really full to I get the drip, drip, drip.) (I was also careful to make sure the gasket was properly seated.)
The Ecklers gasket and lock ring look a little flimsy, so I am wondering about finding original stuff. (The shop that I wanted to do the RENU process to my original tank through out the original gasket and lock ring when they could not fix my original tank.) I have a new tank.
This F-100 has the 18 gallon tank aft of the rear axle.
Bill,
I try not to take your ability to dig up part numbers and let us know what dealers might have stock on hand. Much obliged if you can work that magic for this gasket and lock ring.
Has anyone else ran into this ??
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,239
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From: S/W Missouri, Polk county
Yes I have, so I always use a new gasket, and little solvent pruff RTV. Also make sure your mating surfaces are clean, and the lock ring is straight and not bent, same for the tank ring area. Did you do the tab bend to lock it trick?
Thread Starter
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Tuned
Joined: Jan 2006
Posts: 360
Likes: 78
Thanks 77&79 F-250 and Papa Bear Yuma
Thanks guys! I will make good use of your info. I debated putting some sealer on the gasket, and now I will. I also knew that someone, somewhere would have an alternative to the dinky little gasket that came with my Eckler's fuel sender.
Thanks!
Thanks!
Fleet Mechanic
Joined: Sep 2014
Posts: 1,626
Likes: 78
From: NE Texas
Ran into the same problem - the good news is that it only leaks when the tank is full. Another alternative for you - a #229 O-ring is the right size. Be
sure to lube the ring with something like grease or petroleum jelly so if the sending unit flange shifts, it won't distort and allow the leak to recur.
sure to lube the ring with something like grease or petroleum jelly so if the sending unit flange shifts, it won't distort and allow the leak to recur.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
COAF-9276-A .. Fuel Sending Unit O-Ring - 2 3/8" I.D. x 2 9/16" O.D. x 1/8" thick / Available from Ford
1960/79 FoMoCo Passenger Cars; 1967/72 F100/350 with auxiliary fuel tank; 1970/79 Bronco & Econoline; 1973/79 F100/350 with mid-ship & aft axle fuel tanks.
1960/79 FoMoCo Passenger Cars; 1967/72 F100/350 with auxiliary fuel tank; 1970/79 Bronco & Econoline; 1973/79 F100/350 with mid-ship & aft axle fuel tanks.
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