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Author Topic: Coolant leak  (Read 1655 times)

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tunnie

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Coolant leak
« on: 08 July 2019, 19:06:20 »

Think found the issue... in

https://imgur.com/a/bjh3wCJ

Water pump seal? Pump has never been changed, recall GM ones just to be cheap but not any more. Just eBay now?
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TheBoy

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Re: Coolant leak
« Reply #1 on: 08 July 2019, 19:08:22 »

Cant tell from pic, can only see coolant on bottom pulley, which could potentially come from rad.

Yank apart to confirm.
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tunnie

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Re: Coolant leak
« Reply #2 on: 08 July 2019, 19:12:36 »

Cant tell from pic, can only see coolant on bottom pulley, which could potentially come from rad.

Yank apart to confirm.

How could rad coolant get there?
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dave the builder

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Re: Coolant leak
« Reply #3 on: 08 July 2019, 19:32:00 »

Cant tell from pic, can only see coolant on bottom pulley, which could potentially come from rad.

Yank apart to confirm.

How could rad coolant get there?
Rad coolant is the same coolant as water pump, oil cooler etc etc
if a small hole was in a fin of the rad, it would squirt onto the block ,or get pushed that way by fans ,forward movement  :y
BUT , as TB says....
Slacken the torx that hold the water pump pulley
take off the aux belt , remove pulley and look  :y
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tunnie

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Re: Coolant leak
« Reply #4 on: 08 July 2019, 20:03:19 »

I know itís all same coolant, there is no evidence around rad itís come from there. I wonít be looking at this myself, will be taking it to Serekís garage as soon as he can fit me in
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biggriffin

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Re: Coolant leak
« Reply #5 on: 08 July 2019, 21:24:59 »

I've got this 3.2rad, has a top mounting lug missing, but is okay otherwise, if you need it when at sereks, ask him to ring me.
 
 
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dave the builder

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Re: Coolant leak
« Reply #6 on: 08 July 2019, 21:41:29 »

If it is the water pump leaking ,you need to address it ASAP
they can go from a slight leak to a big leak quite quickly
its a few bolts , belt off and a top up of fluid afterwards
are you feeling lucky  :-\
though the cam-cover gaskets would be easy to get at if you cook the engine and have it out for replacement  :D
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tunnie

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Re: Coolant leak
« Reply #7 on: 08 July 2019, 23:08:35 »

Iíve worked on many a V6 to know they are horrible to work on, that will need a mallet to loosen. Rather it be taken off and replaced in on go and not by me.  :)
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Doctor Gollum

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Re: Coolant leak
« Reply #8 on: 09 July 2019, 01:19:51 »

100% rad leak.

No way on this planet or next that it would be coming from the water pump ;D
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TheBoy

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Re: Coolant leak
« Reply #9 on: 09 July 2019, 12:16:12 »

Iíve worked on many a V6 to know they are horrible to work on, that will need a mallet to loosen. Rather it be taken off and replaced in on go and not by me.  :)
Assuming its been serviced at the correct schedules, the water pump pulley will fall off once the belt is off and the 3 bolts undo :).

Then you can see for definite.

To me, that seems a strange place for coolant to end up if the waterpump bearing seal is failing.
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Nick W

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Re: Coolant leak
« Reply #10 on: 09 July 2019, 13:32:53 »

Iíve worked on many a V6 to know they are horrible to work on, that will need a mallet to loosen. Rather it be taken off and replaced in on go and not by me.  :)


Seriously?


Loosen the pulley bolts before you remove the drive belt.
The pump is attached with three bolts, undo those and the pump will fall out with a tap from a mallet(block of wood and a hammer).


Doing the N/S camcover is a much worse job, and even that shouldn't stretch you
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Re: Coolant leak
« Reply #11 on: 09 July 2019, 18:15:36 »

Iíve worked on many a V6 to know they are horrible to work on, that will need a mallet to loosen. Rather it be taken off and replaced in on go and not by me.  :)


Seriously?


Loosen the pulley bolts before you remove the drive belt.
The pump is attached with three bolts, undo those and the pump will fall out with a tap from a mallet(block of wood and a hammer).


Doing the N/S camcover is a much worse job, and even that shouldn't stretch you

Plus 1. :y
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tunnie

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Re: Coolant leak
« Reply #12 on: 07 August 2019, 09:44:18 »

So Serek found HBV was leaking and replaced that (2 year old genuine) - But still have a coolant leak.  :(

Lost a 3rd of the header tank on a ~50 mile run, not used it today will get it on ramps tomorrow.

Had a quick look yesterday, HBV area all dry and underneath the car/tarmac was all dry and it was parked in a multi-story. I would have expected to find a puddle at some point.  :-\
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addy

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Re: Coolant leak
« Reply #13 on: 07 August 2019, 10:59:55 »

Would doing a coolant pressure test, as in the maintenance help. I know it picked up the radiator leaking on mine, it only showed once the pressure was raised?
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tunnie

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Re: Coolant leak
« Reply #14 on: 07 August 2019, 11:01:49 »

Would doing a coolant pressure test, as in the maintenance help. I know it picked up the radiator leaking on mine, it only showed once the pressure was raised?

Pressure test was done, showed no leaks  :(  :-\
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