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The mkiv Supra Owners Club

Water pump?


Daston

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Hi guys

 

Well looks like my heater matrix is ok, however when I went to flush out the coolant there was no need as its dripping all over my drive!

 

I think it is the water pump (pully by altinator) as there is a big pipe there comeing off the rad. I can squeeze the pipe and when I do water comes out behind by the engine block (not from the pipe tho).

 

image

 

Any ideas on what this is?

 

Also my coolant is a real shitty rusty colour could this have anything to do with it?

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Below your water pump looks dry, and generally has a small pipe coming off the drain on it to under the engine. Have a look for that pipe off the water pump first. It could be something simple like the thermostat gasket, which is in the region of the water. Another case could be a core plug, but I wouldn't of thought that would be the case.

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Looking at the picture attached, the water pump is the green bit, if it where leaking I would expect the area coloured Red to be wet, the purple bit is the thermostat housing, and that seems to be the most logical place to start looking TBH. Unless the water pump drain is routed around to that area (which would be rather strange).

DSCF0021.jpg

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Ok just taken off the heat shield and air intake and found out where the water is going at an alarming rate! Plus why my heater died first

And by the look of it it has been leaking for some time.........unless the rust is normal

 

I have marked where the water is comeing from, on the water pump leak to the right it comes from that area but from behind.

 

image

 

This is where the water is sitting, should it rust that much? Oh lost a whole rad's worth of water overnight.

 

image

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If the red marks on your first picture are where it is all leaking from (sorry really couldn't understand what you wrote) then the larger item is your thermostat housing, that will have either a gasket or rubber O-ring keeping it together. The other, smaller, itme is a coolant pipe for the rear of the engine by the looks of it.

 

Attached pic shows the housing for the thermostat and water pipe.

waterpipes.JPG

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Well I've done TT's, and by remove things I meant remove the airbox etc etc, it's only held in with 2 nuts, pretty straight forward to get off.

 

Remove the water pipe, put a socket on the visible nut to remove, add an extension to the socket and then slide it round the back to get the second one, part off, job done. Refitting is the reverse of removal.

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ok got the metal hose off took all of 1hr (draining the water took most of that time). There was no gasket between the parts, I angled my camara in to take some snaps before proceding further. Could someone have a look and tell me if the o-ring is indeed the problem? It looks as if it is leaking from the left in this pic.

 

image

 

Also here is the pic of the join between the water pump and the heater's steel tube.

 

image

 

Also kinda balls'd up and snapped both the bolts off the thurmistat housing is it just a case of drilling out the old bolts and tapping new ones in?

 

Cheers

 

From a rather wet Dave

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Right been told that I am going to need to remove my water pump to sort out those sheered bolts and in that case might as well get a new pump. Anyone got a good step by step guide as the Toyota repair manual I got covers both the GE and GTE at the same time so is a little confusing.

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Ok whos a numpty??

 

New thermostat and oring in topped up water, no problems went for a spin. Had to stop outside toyota as I could smell coolant and my heater was not working so opened the bonet and the gasket on the heater water pipe by the pump had tottaly gone! so Pissin out water like its going out of fasion had to nurse the car home (only 5 min away)

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