Coolant leak, possible bad/blown head gasket on my V6! - Toyota RAV4 Forums
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#1 (permalink) Old 11-21-2012, 11:19 PM
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Coolant leak, possible bad/blown head gasket on my V6!

Perhaps I haven't searched enough, but I have yet to read about a blown head gasket on a V6 2gr-fe.

I came home from the carwash and was drying stuff under the hood. I noticed my coolant level was down for the FULL mark in the overflow. Hmmm... I grab a flash light and bend down behind the front passenger wheel and shine my flashlight upwards on the backside of the engine. There it is, it looks like coolant seeping out from between the head and the block. See attached pics.

What do you guys think? Failed head gasket????? Could it be anything else?

I'm thinking this is going to be a very expensive repair bill....not the part necessarily, but the labour.

Thanks for taking a look.

Jeff
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#2 (permalink) Old 11-22-2012, 01:45 PM
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I might be wrong, but I think if the head gasket was blown you'd see a mix of coolant with your oil. Is your oil level down at all? The water pumps are known to fail, so that would be my first suspect.
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#3 (permalink) Old 11-22-2012, 02:07 PM
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From your pic it appears to be a leak from the head/block area. Head gaskets can fail with subsequent leaks either into the cylinder(s) or externally or both, depending upon the point(s) of failure.

Add: But as far as I am aware that sort of leak is not a problem with the V6 engine. Is coolant running down from another place?

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#4 (permalink) Old 11-22-2012, 02:19 PM
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There seems to be pink residue all over the place. Did you wash under the hood?

The only time that I had coolant leak was when I filled to the FULL mark when cold. When the engined warmed up, it went above capacity and leaked down some hoses.

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#5 (permalink) Old 11-22-2012, 06:40 PM
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It does look like a possibility. Keep an eye on it and try a pressure test. Bummer. What year and how many k?

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#6 (permalink) Old 11-22-2012, 07:25 PM
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he has a 2007 V6... so probably out of warranty. on my two failed water pumps, the leaking was more on the side of the engine, this is really on the back part, so it would look like one of the gaskets is toast.
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#7 (permalink) Old 11-22-2012, 08:56 PM
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Sure looks like the head gasket area. An external leak. I'd powerwash the area and see if it comes back. If it does but there's no coolant in the oil or vice versa you could try a head gasket sealer. I like the stuff that looks like powered aluminum. And short of pulling it apart you could retorque the head.

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#8 (permalink) Old 11-22-2012, 10:43 PM
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Definitely a blown head gasket.

Will update you with all details when the ordeal is over.

My Rav goes in on Monday...

Last edited by JTRAV; 11-29-2012 at 09:00 PM.
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#9 (permalink) Old 11-22-2012, 10:47 PM
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Quote:
Originally Posted by Octane View Post
he has a 2007 V6... so probably out of warranty. on my two failed water pumps, the leaking was more on the side of the engine, this is really on the back part, so it would look like one of the gaskets is toast.
Octane, how many kms approx did you have on each failed water pump?

I am thinking it may be good preventative maintenance to change it out if there is access to it anyway. However, mine was already replaced once at 66,XXX kms and is still good to date.

I only say this b/c according to the book, to change the head gasket, it says to pull the motor which would give easy access to other parts. However, I am wondering if there is a short cut around this (the tech might not have to remove the whole engine). I'll see what they say.

Jeff
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#10 (permalink) Old 11-22-2012, 11:52 PM
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Jeff,
Do you have warranty on this?
If not, you might be interested to know that Subaru's fix for external HG leak was their own coolant conditioner aka stop leak additive. That was circa 2000 and worked for them.
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