Leaking tire valve

Late last fall one of the 1850s had a rear tire leaking, so I borrowed a tank and got a cheap drill pump from Harbor Freight and pumped out the fluid and put in a new inner tube and put it back together and pumped the fluid back in. I walked past it this afternoon and when I looked at it the rim was wet and the valve stem was green colored. CRAP!!!! I jacked it up and poured some water on it and then turned the valve stem to the top. When I took the cap off, air was leaking out. I checked my supply and had one new stem, so I took the old one out to replace it. The inner part of the stem where the O ring goes was broken off. I got the piece out and put the new stem in and aired it up. I have had many leak, but I have never seen one break off before!! I left it on the jack with the stem up and Ill check it tomorrow. Im going to be gone for a couple of days on a tractor ride, so I think Ill leave it on the jack until I get back.

I had the same problem about a month ago on a boat trailer. I too have never seen one do that

Whenever I take a stem or core out it goes back in with a dab of never sieze.

Lucky you could get the part. I replaced one core a month ago, and noticed the other one leaking this week. Went to the local NAPA store and they had none. The guy looked at other stores and most of them did not have the part. A couple did, so I have to get it ordered in. Maybe a total of 6 cores in the dozen stores he checked.

Tim

I just want to clarify some terms here for future readers, because I have seen good core housings thrown away when just changing the core in the rescued core housing solved the problem.

super99's picture is a core housing, not a core, not a stem. It is used in a liquid fill valve stem (either on a tube or in a rim). There is a common valve core inside that housing that can be changed. The core housing does not normally need to be changed, in my experience the core is the most common leak. In super99's case the core housing did need changing as the end of the housing (opposite the threaded end) should have had an O-ring in a groove, which seals inside the valve stem. As he said the end was broken off, so it lost that seal in the stem.

A tire shop that services ag or construction tires should have core housings readily available. TSC and other farm stores usually have some if they have a Slime display. The core in the housing is the same core used in auto valve stems, easily found and replaced.

brentb, you must have a serious boat trailer to have had that same problem. While I know it is not impossible, I seriously doubt you have liquid fill valve stems on a boat trailer tire. I would sooner believe a broken metal valve stem on a tubeless tire.