Water pump heater tube leak
#1
Water pump heater tube leak
So I swapped the water pump but now I notice a leak at the connection of the water pump to the black, metal heater tube that goes to the heater core. I had the o-ring seated in the groove of the metal tube but the o-ring won't stay there when you tap the tube in the pump. It sticks out a bit at the top, but it still is pinched in the connection. And that's where the leak is from. it's a pin hole leak but still enough to drain the coolant and cause overheating issues every couple of hundred miles or a few days.
I am thinking of JB welding it or maybe take the tube out and using an rtv to seal along with the o-ring. Any suggestions would be appreciated.
Thanks
I am thinking of JB welding it or maybe take the tube out and using an rtv to seal along with the o-ring. Any suggestions would be appreciated.
Thanks
#2
Did you replace the o-ring with a new one when you changed your pump?
Those O-rings on pressure fit hose fittings can be a real PITA! You have to push the hose in straight and it often helps to lube it a bit with either coolant or a dab of motor oil so that it slides in easier and doesn't get backed out.
You might want to back that tube out, make sure the o-ring is still in good condition then check the hole for any rough spots or areas that are causing the o-ring to hang up and get pushed out, lube it up and try again. It will expand when it gets heated.
Those O-rings on pressure fit hose fittings can be a real PITA! You have to push the hose in straight and it often helps to lube it a bit with either coolant or a dab of motor oil so that it slides in easier and doesn't get backed out.
You might want to back that tube out, make sure the o-ring is still in good condition then check the hole for any rough spots or areas that are causing the o-ring to hang up and get pushed out, lube it up and try again. It will expand when it gets heated.
#3
Thanks for the input.
Yes, I did line it with coolant the first time I installed it. But it still backed out a bit towards to the top of the connection. Now I put some RTV along with the o ring to help good the o ring in place and also to work as a sealant. I put RTV liberally. It has been a couple of days and so far it hasn't leaked.
Yes, I did line it with coolant the first time I installed it. But it still backed out a bit towards to the top of the connection. Now I put some RTV along with the o ring to help good the o ring in place and also to work as a sealant. I put RTV liberally. It has been a couple of days and so far it hasn't leaked.
#4
Thanks for the input.
Yes, I did line it with coolant the first time I installed it. But it still backed out a bit towards to the top of the connection. Now I put some RTV along with the o ring to help good the o ring in place and also to work as a sealant. I put RTV liberally. It has been a couple of days and so far it hasn't leaked.
Yes, I did line it with coolant the first time I installed it. But it still backed out a bit towards to the top of the connection. Now I put some RTV along with the o ring to help good the o ring in place and also to work as a sealant. I put RTV liberally. It has been a couple of days and so far it hasn't leaked.