[Tyc0]

Alright so it just started leaking a few days ago for no apparent reason, but it's a fairly strong leak and will drip the whole reservoir dry over night. I went in today and removed all the hoses attached to the water pump and thermostat and then reseated and retightened them to no avail, anyone have any ideas as to what could leak onto the water pump from above ? Or any suggestions on how to trace it ? If you zoom in you can see the drops right below the plug and they run down from each side of the connector.

[mweisdorfer]

Originally Posted by Tyc0

Alright so it just started leaking a few days ago for no apparent reason, but it's a fairly strong leak and will drip the whole reservoir dry over night. I went in today and removed all the hoses attached to the water pump and thermostat and then reseated and retightened them to no avail, anyone have any ideas as to what could leak onto the water pump from above ? Or any suggestions on how to trace it ? If you zoom in you can see the drops right below the plug and they run down from each side of the connector.

Then you gave an O-ring leak

[Tyc0]

Originally Posted by mweisdorfer

Then you gave an O-ring leak

There are no o rings down there unless your talking about turbo coolant lines but it's not leaking from there

[djbobbless]

Have you already checked the cylinder head to thermostat hose where the "mickey mouse" flange mounts to the engine? Didn't realize that was leaking from a busted o-ring and it led down eventually to the waterpump considering it goes to the thermostat.

[Tyc0]

Originally Posted by djbobbless

Have you already checked the cylinder head to thermostat hose where the "mickey mouse" flange mounts to the engine? Didn't realize that was leaking from a busted o-ring and it led down eventually to the waterpump considering it goes to the thermostat.

Yes I have I read about this happing to someone else and I was hoping this was it but it's not

[Recoiletiquette]

Just a shot in the dark but I've heard about somone that had a hair line crack in the plastic part of the water pump.

[Tyc0]

Originally Posted by Recoiletiquette

Just a shot in the dark but I've heard about somone that had a hair line crack in the plastic part of the water pump.

Yeah I heard about this too but my water pump is about 5 thousand miles old so I hope that's not it but I will check tomorrow and update if it is

[djbobbless]

Originally Posted by Tyc0

Yeah I heard about this too but my water pump is about 5 thousand miles old so I hope that's not it but I will check tomorrow and update if it is

I've seen new oe replacement pumps crack before that. I would assume it's that if you've checked everything else.

[Tyc0]

Originally Posted by djbobbless

I've seen new oe replacement pumps crack before that. I would assume it's that if you've checked everything else.

Okay I'll make sure and check tomorrow thanks for the input, luckily I bought through fcp so I'll be okay if that's the case but man that would be annoying if it is

[djbobbless]

Originally Posted by Tyc0

Okay I'll make sure and check tomorrow thanks for the input, luckily I bought through fcp so I'll be okay if that's the case but man that would be annoying if it is

tell me about it. That pain in the ass upper bolt on the waterpump lol.

[Recoiletiquette]

Originally Posted by djbobbless

I've seen new oe replacement pumps crack before that. I would assume it's that if you've checked everything else.

Same, ive seen some people talk about braking multiple in a row. i would definitely give it a look at least.

[Tyc0]

Originally Posted by djbobbless

tell me about it. That pain in the ass upper bolt on the waterpump lol.

I decided to not reinstall that bolt when I put the new pump in lol, saved me a lot of time today when I was ripping the pump out, got it out in about 20 minutes

[alpnwss]

Originally Posted by djbobbless

Have you already checked the cylinder head to thermostat hose where the "mickey mouse" flange mounts to the engine? Didn't realize that was leaking from a busted o-ring and it led down eventually to the waterpump considering it goes to the thermostat.

I *think* that part of the system is not 'wet' when the engine is off. Water does not sit around there. It's only under operation and water flow that you'd have water going through that fitting.

[alpnwss]

Did you check the connection from the bottom of the resivoir? Sorry if this has already been said.

[Tyc0]

Originally Posted by alpnwss

I *think* that part of the system is not 'wet' when the engine is off. Water does not sit around there. It's only under operation and water flow that you'd have water going through that fitting.

Okay I'll make sure to check that

[Tyc0]

Just an update I found a tiny hole in the U hose and I'm hoping this is the issue, I ordered a new one and I will update again

[Tyc0]

New hose is on and it's been fine for a few days, still drips but seems to be slower, not sure if the u hose was contributing and making it worse but it still leaks either way. I also ruled out the cylinder head to thermostat hose. If anyone has any other ideas I'd appreciate it. I've taken the water pump out four times now trying to find this leak, tomorrow I will be taking out the thermostat as well and redoing all those connections. I'm open to any ideas at this point

[kulxio]

Originally Posted by Tyc0

New hose is on and it's been fine for a few days, still drips but seems to be slower, not sure if the u hose was contributing and making it worse but it still leaks either way. I also ruled out the cylinder head to thermostat hose. If anyone has any other ideas I'd appreciate it. I've taken the water pump out four times now trying to find this leak, tomorrow I will be taking out the thermostat as well and redoing all those connections. I'm open to any ideas at this point

Did you try to pressurize the system with compressed air to help finding the leak?
I have an extra coolant cap that I mounted a nipple in which I always use whenever I've done something with the coolant system to make sure everything is sealed.

[Tyc0]

Originally Posted by kulxio

Did you try to pressurize the system with compressed air to help finding the leak?
I have an extra coolant cap that I mounted a nipple in which I always use whenever I've done something with the coolant system to make sure everything is sealed.

I understand the idea but how would this make it any easier to find the leak than when it drips normally ?

[Tyc0]

Update

Water pump is cracked with about 8k miles on it, id post pictures but the cracks are so small you can barely see them.

Very similar to this video

Luckily I bought through FCP so I will be reaching out to them for a new one.

[Tyc0]

Replaced water pump and looks to be good..so far