After 26yrs the lower radiator hose petcock decided to call it quits by leaking coolant.
After a two unsuccessful attempts to re-install the petcock (1st with new teflon tape and then permatex teflon thread sealant with PTFE) I decided to get a new petcock. Unfortunately, the new petcock is leaking worse then before.
It seems that despite using ample teflon sealant, tightening it well, and letting it dry for three days, that I can't get a good seal for it to stop the leak. The petcock did not leak when originally filled with fluid and when the car was cold/unpressurized. It started leaking after the car warmed up and pressurized. The leak is coming from the threaded portion of the petcock that screws into the lower radiator hose coupler (see pics showing leak coming from the threads sealed with teflon).
I've inspected the coupler and it's threads a number of times and don't see any reason for it to leak. I don't see evidence of a crack or anything either. However, my guess is there has to be one inside the threads that I cannot see?
Wondering if other 95 R owners have gone through this and have advice. I've done the obvious and this little annoyance has me stumped.
After a two unsuccessful attempts to re-install the petcock (1st with new teflon tape and then permatex teflon thread sealant with PTFE) I decided to get a new petcock. Unfortunately, the new petcock is leaking worse then before.
It seems that despite using ample teflon sealant, tightening it well, and letting it dry for three days, that I can't get a good seal for it to stop the leak. The petcock did not leak when originally filled with fluid and when the car was cold/unpressurized. It started leaking after the car warmed up and pressurized. The leak is coming from the threaded portion of the petcock that screws into the lower radiator hose coupler (see pics showing leak coming from the threads sealed with teflon).
I've inspected the coupler and it's threads a number of times and don't see any reason for it to leak. I don't see evidence of a crack or anything either. However, my guess is there has to be one inside the threads that I cannot see?
Wondering if other 95 R owners have gone through this and have advice. I've done the obvious and this little annoyance has me stumped.