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Old 07-12-2010, 02:12 AM   #1 (permalink)

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Default 2.2 Ecotec leaking coolant

It appears that coolant is leaking from the waterpump housing. It looks like tere's a weep hole and water is draining from there. Even when the car is just sitting in the garage with the engine cool.

Any suggestions would be greatly appreciated.
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Old 07-12-2010, 02:18 AM   #2 (permalink)

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Default Re: 2.2 Ecotec leaking coolant

I can't imagine Eco engines would be designed to leak normally. Maybe a sign of wear?
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Old 07-12-2010, 02:23 AM   #3 (permalink)

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Default Re: 2.2 Ecotec leaking coolant

water pump seal is toast. Time for a new pump or a rebuild kit if such a thing even exists anymore
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Old 07-12-2010, 02:24 AM   #4 (permalink)

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Default Re: 2.2 Ecotec leaking coolant

I don't know. It just started. I can't even put my finger on anything that may have caused it. I had the radiator repaired because it had a leak. Put new hoses on everything. That's it.
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Old 07-12-2010, 02:26 AM   #5 (permalink)

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Default Re: 2.2 Ecotec leaking coolant

Could it be vibration induced? Not enough miles on that car to justify a seal going without some assistance.
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Old 07-12-2010, 03:09 AM   #6 (permalink)

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Default Re: 2.2 Ecotec leaking coolant

Buggy Builder:
It doesn't look like a seal. It looks like a casting hole. Just not sure. My spare (nonrunning) motor has a different style pump, so I can't compare.

Gene:
I suppose it's possible, just seems like an odd location.

Does anyone with an Ecotec have a similar design pump? Is there a hole in it?
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Old 07-12-2010, 03:42 AM   #7 (permalink)

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Default Re: 2.2 Ecotec leaking coolant

The seal is inside on the shaft. It is between the impeller and the bearings. The weep hole is there so the water from a leak can run out instead of filling up the bearings and trashing them. Trust me, you need a water pump.
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Old 07-12-2010, 03:51 AM   #8 (permalink)

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Default Re: 2.2 Ecotec leaking coolant

Agreed with Buggy Builder here. I have changed many a water pump thats leaks out that weep hole when the seal fails.

It was likely just its time to go.
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Old 07-12-2010, 03:57 AM   #9 (permalink)

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Default Re: 2.2 Ecotec leaking coolant

Got it, thanks. Now that makes more sense. Would it be possible to replace the damaged seal? Or just easier to replace the pump? The one on my spare motor looks a little different, but has all the same mounting points. Do you think it would be acceptable to use that?

Also, I see that for the Ecotec, there's a special tool for holding the timing chain in place. Is there a work around?

Thanks
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Old 07-12-2010, 04:47 AM   #10 (permalink)

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Default Re: 2.2 Ecotec leaking coolant

Cannot say for the timing chain part. I would not use the one on the spare motor for a few reasons.

It may be ready to go itself.

If you need the motor you would then have to put another pump on it (Sure you could just swap it back maybe)

But its on the spare and personnaly I would leave it and just get a new (or quality rebuilt one) for the motor in the machine.

Not totally sure how hard or easy this water pump changes is but pulling it off the other motor sounds like more work with little gained IMO. New or rebuilt ones are not to bad priced usually.
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