Hey guys, I don't think I've ever notice this happen to a coolant hose. I replaced the hose about 500 miles ago with a factory part. Maybe I got an old stock batch? Thoughts?
Upper radiator hose thread seepage?
- Thread starter Alron67
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LandLocked93
SILVER Star
Are you leaking coolant?
Having over-temp issues?
- Thread starter
- #3
Aside from the seeping threads, no coolant leaks. Just noticed it when prepping for an oil change.
LandLocked93
SILVER Star
The skin texture of that hose makes me think immediately it is OEM.
What you see I believe to be "resin". Junk used to fuse rubber to a strengthening tenon, if you will.
is the dark area on the radiator neck 'wet' & does it smell like coolant? if the genuine red stuff it should leave a dry pink residue
The clamp is within the neck portion of the radiator so I'd pressure test the radiator and look to see if maybe a hairline crack is starting on the top neck between the clamp & top tank
The clamp is within the neck portion of the radiator so I'd pressure test the radiator and look to see if maybe a hairline crack is starting on the top neck between the clamp & top tank
I had this same issue. I thought coolant was coming out of the threads in the hose when in fact it was just a bad connection. The radiator nipple was caked in hard coolant residue. I suspect the tiny bit of coolant that escapes is absorbed by those fibers on the end of the hose.
I cleaned it up and the leak hasnt returned.
I cleaned it up and the leak hasnt returned.
This. Also, if that factory clamp is original replace with a new one. They will lose clamping force over time causing a leak like the one you have. While you’re at it replace that POS non OEM clamp on the lower side as well And make sure the hose is flush with the metal housing.
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As a side note, the white stripe on the hose is where Toyota tells you to place the tongue of the clamps.
I found that very handy when placing the clamps on the hose before I installed the hose.
I found that very handy when placing the clamps on the hose before I installed the hose.
NLXTACY
Wits' End
It’s seepage that can happen on freshly installed hoses. Rubber creates a bond to the tube but it takes a few heat cycles. Once it’s fully bonded it won’t seep. Ever notice that radiator hoses can be difficult to remove and you have to use a pick or screwdriver to get it to release? That’s the bond. Side note, silicon hoses don’t bond.
Anyway, during heat cycling (and before bonding), hot coolant seeps out and what you see is the coolant wicking into the threading of the hose. It very quickly stops so no worries. Clean it off and see if it continues then give it some time.
Anyway, during heat cycling (and before bonding), hot coolant seeps out and what you see is the coolant wicking into the threading of the hose. It very quickly stops so no worries. Clean it off and see if it continues then give it some time.
- Thread starter
- #12
Yup its OEM
- Thread starter
- #13
Thanks for all of the replies..Gonna clean it up and pick up some new OEM clamps during the week.
