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sealing the fuel sending unit (Read 3566 times)
amxdreamer
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sealing the fuel sending unit
10/24/11 at 19:39:17
 
When I first assembled my car I had a leak at the fuel sending unit. I dropped the tank and installed a new O-ring and I thought I had it beat. Well the first time I filled the tank it leaked. Fast forward to today and I dropped the tank again. I cleaned and prepped both surfaces tweaked the ring that holds the sender in so it was nice and tight and the thing still seeps at the sender. Anybody have any tips? I really don't want to have to lower the tank yet again.
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Tony

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Re: sealing the fuel sending unit
Reply #1 - 10/24/11 at 21:46:50
 
pmed ya brutha
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Re: sealing the fuel sending unit
Reply #2 - 10/24/11 at 22:48:20
 
Thanks JP, i`ve tried thst stuff already. I was wondering if there was an RTV type product that is safe around fuel that will help with the minor shape differences.
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Re: sealing the fuel sending unit
Reply #3 - 10/25/11 at 02:14:40
 
Well obviously you didnt do it right...... Roll Eyes Grin Grin Wink
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Re: sealing the fuel sending unit
Reply #4 - 10/25/11 at 03:03:53
 
Quote from firecapt321 on 10/25/11 at 02:14:40:
Well obviously you didnt do it right...... Roll Eyes Grin Grin Wink

Didn't you use an o-ring from a vacuum cleaner or something on yours?  Roll Eyes
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Re: sealing the fuel sending unit
Reply #5 - 10/25/11 at 03:25:13
 
YEP..... much heavier duty... Wink Grin I knew you would remember that cause that disaster took place one day before I left for GAD, remember..... when you saw my tail lights all day long.... Grin Grin
 
 
sorry Tony, but you know we cant help it.....
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Re: sealing the fuel sending unit
Reply #6 - 10/25/11 at 03:39:48
 
You are killing me Smileyso what did JP tell you to use that did not work?
Was it something fire people (got to be pc Wink )use to seal tanks if they get leak in an accident?
IIRC the "O" ring is not round but square. Could you bend the tank where the ring sits out a little to make the seal tighter?
Dave ----
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amxdreamer
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Re: sealing the fuel sending unit
Reply #7 - 10/25/11 at 03:43:25
 
Quote from firecapt321 on 10/25/11 at 03:25:13:
YEP..... much heavier duty... Wink Grin I knew you would remember that cause that disaster took place one day before I left for GAD, remember..... when you saw my tail lights all day long.... Grin Grin


sorry Tony, but you know we cant help it.....

 
 
All good bro!
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Re: sealing the fuel sending unit
Reply #8 - 10/25/11 at 10:23:46
 
Dave, I was simply tellin Tony to make sure the ring wasnt gettin kinked during install and the tabs were adjusted so it was tight. No trade secrets were passed on in hiding..... Cheesy Grin
 
 
The PM was just a Team Blue thing..... Wink Grin
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Re: sealing the fuel sending unit
Reply #9 - 10/30/11 at 02:20:10
 
Tried again today and it still leaks... Angry
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Tony

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Re: sealing the fuel sending unit
Reply #10 - 10/30/11 at 03:08:15
 
Sorry to hear it's not fixed.
Do you think it could be a hole near the sender assy. And not the rubber seal?
The lock ring fits into another ring that is spot welded to the tank, what if that ring pulled 1 of the spot welds and left a little hole? This would look like a bad seal.
I had a valve cover on a Dodge 318 that kept leaking by one of the outer back bolts. After pulling for the 4th time I look really close and found the washer that is part of the bolts cut the cover. When you took up on the bolts it opened up that cut and would leak but could hardly see it when cover was off.
Guess it needs to come back down to check so do you look for a new tank or try again to fix this one?
Dave ----
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amxdreamer
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Re: sealing the fuel sending unit
Reply #11 - 10/30/11 at 03:32:44
 
hmmmm good idea FF, I`ll get out a mirror and a light tomorrow and see if I can see anything.
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Re: sealing the fuel sending unit
Reply #12 - 10/30/11 at 14:50:53
 
Quote from amxdreamer on 10/30/11 at 03:32:44:
hmmmm good idea FF, I`ll get out a mirror and a light tomorrow and see if I can see anything.

 
 Don't get a mirror and LIGHTER!!!  Wink
 
David
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On second thought..............

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Re: sealing the fuel sending unit
Reply #13 - 10/30/11 at 16:23:06
 
lol ne worries there! I`ve been to industrial fires for just that!  Smiley
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Re: sealing the fuel sending unit
Reply #14 - 10/31/11 at 00:53:52
 
Hope this isn't going to be another 700 page "how do I fill my transmission" type thread?  Grin
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By the way, my sending unit's leaking too! Roll Eyes
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1970 Wild Plum Metallic Gremlin. 401/T-10, CalTrac's, 3:54 Amc-20 Rear End, Moser's.
Best E.T. 12,something sec. :-P Alias... "The Purple Helmet" in
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