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 Gas Tank Leak

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25tj25
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PostSubject: Gas Tank Leak   Tue Oct 15, 2013 11:08 pm

G'day CCC members,
got a bit of a problem that I can't seem to track down. when I fill the plymouth up full with gas
it leaks out the bottom pretty bad. its happened twice.

Firstly the Gas tank was stripped and dipped. checked for leaks and resealed then painted.
so I'm confident its not the tank.

At the first time I was in the service station driveway
car full of people with a hot car, filling it up when the handle clicked off and spewed fuel out the filler. I thought ok your full then noticed heaps of gas running out underneath. I crapped myself and got out of the service station driveway , parked on the side of the road with everyone out and let it come out for a bit, then got on my way.
I got home and checked I didn't fit the "O" ring in the filler tube / gas tank connection.

Second time thinking its all fixed. same thing again. Spilling out the bottom.
I checked the Sender gasket and its seems to be sealing ok and gasket looks good.

my quesion is anyone have trouble with the gas tank leaking when full??

knighty



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JAG
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PostSubject: Re: Gas Tank Leak   Wed Oct 16, 2013 12:34 am

my guess was seal around the sending unit, other then that im not sure

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PostSubject: Re: Gas Tank Leak   Wed Oct 16, 2013 12:43 am

JAG wrote:
my guess was seal around the sending unit, other then that im not sure
yep I made my own gasket from proper paper type gasket, and its tight but maybe not enough.
I might buy some cork and make a new one and try that.

I tell you its scary seeing fuel poor out the bottom in the Service station driveway Shocked 
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PostSubject: Re: Gas Tank Leak   Wed Oct 16, 2013 12:10 pm

I had the same thing happen in our '59 Dodge before taking a long trip this summer. It turned out to be the short rubber gas hose that had deteriorated.

Joe is probably right in your instance, although another place the tank can leak is the collar the O-ring fits in. It is soldered on the tank, and the solder seal can break. It should be easy to determine the source either way.

---John

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PostSubject: Re: Gas Tank Leak   Wed Oct 16, 2013 2:02 pm

i was thinking you could only use a rubber gasket, wouldnt the gas eat through cork or paper?

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PostSubject: Re: Gas Tank Leak   Wed Oct 16, 2013 3:29 pm

Tim you need the rubber O Ring new in both places. The filler tube going in tank and under the sending unit goes the other O Ring. They need to be the correct size, to loose and it will leak whereas to small will not mount anyway.

Try those first. DO NOT USE PAPER WHEN IT COMES TO GAS!!!
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PostSubject: Re: Gas Tank Leak   Wed Oct 16, 2013 4:26 pm

EvilPlymouth wrote:
Tim you need the rubber O Ring new in both places. The filler tube going in tank and under the sending unit goes the other O Ring. They need to be the correct size, to loose and it will leak whereas to small will not mount anyway.

Try those first. DO NOT USE PAPER WHEN IT COMES TO GAS!!!
Ok guys will have a look. The gasket at the sender unit is like the Carb gasket paper. will change to "o" ring
also will check the collar

thanks guys

knighty
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PostSubject: Re: Gas Tank Leak   Thu Oct 17, 2013 12:50 am

let us know how you make out

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PostSubject: Re: Gas Tank Leak   Tue Oct 22, 2013 4:51 am

EvilPlymouth wrote:
Tim you need the rubber O Ring new in both places. The filler tube going in tank and under the sending unit goes the other O Ring. They need to be the correct size, to loose and it will leak whereas to small will not mount anyway.

Try those first. DO NOT USE PAPER WHEN IT COMES TO GAS!!!
Ok, got an "o" ring, I measured the space. 60mm inside dia, 66mm outside, and fitted to the sender unit and fit nice and snug.
there was no "o" ring before just a paper gasket so I think this might be the problem. the filler tube has one for sure but I will replace it anyway.

thanks guys for all your comments

knighty
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PostSubject: Re: Gas Tank Leak   Tue Oct 22, 2013 12:36 pm

i hope it fixes your problem please let us all know how you make out

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PostSubject: Re: Gas Tank Leak   Sun Nov 10, 2013 5:05 pm

All fixed. Fitted an "o ring" on the tank sender and its sealed now which is good.

thanks guys
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PostSubject: Re: Gas Tank Leak   Mon Nov 11, 2013 6:16 am

Good to hear you got it squared away. A fuel leak is nothing to mess with.

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PostSubject: Re: Gas Tank Leak   Mon Nov 11, 2013 6:05 pm

this is great to hear, i am glad that we could steer you in the right direction Very Happy

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PostSubject: Re: Gas Tank Leak   Mon Nov 11, 2013 7:21 pm

yep thanks guys, all good
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