Smaller Upper Radiator Hose Leak

[Crestwood1001]

Last Thursday I replaced my expansion tank, the upper rad hose had been replaced approximately 2 months ago. After the tank replacement everything was good, no leaks of any kind. Two days later I turned the car on and turned the AC on, stepped out to double check no leaks, and found it "spit" some coolant. I turned off the car and began to try and find the leak, was able to pin point it to the smaller of the two connections from the upper rad hose to the ET. Today I removed the upper radiator hose and cleaned the connections and replaced, no luck it still slowly drips.
Does anyway have any ideas on how to seal this us? Its not a massive leak, its a slow stream and its not constant, it has not even leaked enough to require me to top off the coolant at this point. So far I see my options as try to get ECS to replace the tank, and order another new upper rad hose and start over. Only issue is this weekend are my only days off until next Sunday, so im going to have to monitor the fluid level and live with it until next weekend unless I can figure it out and get it fixed soon..... any help or tips are much appreciated!

[Crestwood1001]

Here's a quick pic of where it's leaking from...

Sent from my SCH-I535 using Tapatalk 2

[danewilson77]

Disassemble and look at o-ring. If it's good, there could be a defect in the mating surface on the tank.

HTC DNA ON TT4 BETA, WILLIAMSBURG, VA

[Crestwood1001]

I actually did not notice an o-ring in there, its very possible that it was still mated to the old tank which is now gone, is there a part number for a replacement o-ring or do you now of someone a similar size that I can find at a parts store? Was the ring inside the rad hose?

[danewilson77]

I believe there is a piece of software on that joint.

HTC DNA ON TT4 BETA, WILLIAMSBURG, VA

[Crestwood1001]

I will disassemble again and check it out, if it comes down to it I will just order a new rad hose, I can eat the 30$ not a huge deal. Thanks for the help Dane.

[WOLFN8TR]

If you want I can measure the oring that's in my original upper radiator hose. You can even have it if needed.

What brand Exspansion Tank did you get from ECS?
I replied to your PM also.


Gary

[Crestwood1001]

Off the top of my head I don't remember, not oem but not the cheap one either, if you could measure it I would really appreciate it!

Sent from my SCH-I535 using Tapatalk 2

[Crestwood1001]

Gary that Teflon tape idea is great didn't even think of it! I may try that as a temp fix till I have a chance to replace the ring

Sent from my SCH-I535 using Tapatalk 2

[WOLFN8TR]

It should do the trick. Oh ya the oring sits in a groove just behind the taper on the connection. I took mine out to measure, it's the white ring.

8775

Here is the oring size.

"Large"

45.00mm
8776

39.00mm
8778

3.5mm
8777

"Small"

21.00mm
http://img.tapatalk.com/d/13/06/02/eme6e3at.jpg

17.00mm
http://img.tapatalk.com/d/13/06/02/ypubada7.jpg

2.76mm
http://img.tapatalk.com/d/13/06/02/avybaryv.jpg

Gary

[Crestwood1001]

Thanks brother! Should have figured I was missing something

Sent from my SCH-I535 using Tapatalk 2

[Crestwood1001]

That's the ring from the smaller of the two connections right? The big one is good it's the small one that's leaking on me

Sent from my SCH-I535 using Tapatalk 2

[WOLFN8TR]

My bad I thought it was the big one. I will go measure the small one for ya.

[Crestwood1001]

Is there an o-ring in the small one?

[danewilson77]

Good stuff fella's.

[WOLFN8TR]

Is there an o-ring in the small one?

Yes. Added the info above with the other large oring.
8785


Gary

[danewilson77]

Yeah...I believe all those connections have software in them.

[WOLFN8TR]

Yep.


Gary

[Crestwood1001]

Most certainly missing, must have misplaced it during the repair. Thanks a ton for the info Gary ill let you know when I get it sorted out, the Teflon seems to have done it but I would like a proper fix so ill be hunting for an oring