filler tube leaking

OK, so I got my trans problems worked out from the other day but now its leaking fluid from where the tube goes into the trans. I put a new o-ring on but no luck and its not a small leak.

Anybody else ever experience this? I thought if the tube went in the hole and it had an o-ring on it that it should seal? I can't figure this out ou: :ball:

 

Does it leak when you fill it, or only if the car has been sitting a week or more?

 

I filled it up on the jack stands, ran it through the gears then took it up the street for gas. When I got back I looked under and saw it drip. Within 5 minutes there was a big puddle on the ground.

 

Hmm, I'm not really sure. Maybe the tube isn't pushed in far enough, or that something is bent or scored. I think I read something about that before on this board.

 

2 things, make sure the tube is not cracked at teh o-ring indention, and also make sure you use the correct o-ring, it must fit snug in the indentation. Jim Burek

 

Thanks guys.

Upon further inspection it appears that the tube is slightly kinked at the o-ring groove. I think this could partially be from the tube never really fitting right with the 455/th400 swap into my '66.

Jim, what year and model of car do you use the tube from when swapping a big block into these mid sixties Skylark/GSs?

 

I usually use an aftermarket replacement. Most of the tranny cores we get either don't have the tube or they are bent or broken. I jut don't like the chrome ones, if I have to use one of those, I blast the area where the o-ring goes so it will seal better. Jim Burek

 

I don't mean to butt in on this thread but I am having the same problem with the vac modulator. I pulled it off and made sure the o-ring was good but if it sits for a few days, I'll find a puddle.

Is the fluid suppose to come pouring out of the vac modulator area when it's removed?

 

Yes, when you remove the vac modulator, fluid will come pouring out. Is your o-ring new? If it is getting hard and flat, it will leak. Jim Burek

 

You mean you don't sell those?

 

Yes, if someone wants one, but they are pretty readily available locally. Jim Burek

 

i too had a leak at the base of the filler tube even with a new o-ring.
i placed a bead of rv silicone around the base of the tube. no more leak and that has been 2 years.