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Old 02-23-2016, 01:33 PM   #1
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I see coolant leaking out of here :

underneath the throttle body,
there is a 1-3/4 or 2" hose coming from the radiator side, goes into a housing ,
there is also 3/4" or so, hose coming from the heater core from the firewall.
these 2 look like they meet underneath the throttle body, the leak is coming from the underneath side of where these 2 meet. Scratch that, looking more closely, the two appear to go to separate housings.

The right one looks like it might be the thermostat housing ? in any case it appear to be leaking underneath where the heater core line meets that housing.

Any ideas ?

is that the thermostat ?
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Old 02-24-2016, 12:20 AM   #2
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The 2" line from the radiator goes to the thermostat housing.....

The other line, is from the heater core to the lower intake.......there is an o-ring in there that could be leaking......

Or the lower intake gasket could be leaking down onto both of these.....

Clean area with Brake Klean, and then pressure test to find the leak....
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Old 02-24-2016, 06:44 PM   #3
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It is definitely leaking at/in the thermostat area, hard to see, I can actually see the leak squirting out but can't see where it'* coming from, too much stuff in the way.
It could be where that smaller tube connects to the thermostat housing.....

Problem is, if I take off the TB, I won't be able to run the car to see where the leak is coming from.
I'll see if I can get a mirror in there
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Old 02-25-2016, 12:14 PM   #4
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Now that I've taken a second look.
I believe it'* the one going to the bottom of the TB, (or in that area) I don't think it was the one going to the thermostat housing.

In any case it isn't leaking anymore, tried moving both of them and no leak.
Before is was coming out like a stream from a squirt gun.

Any ideas on why/how it might have stopped ?
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Old 02-26-2016, 09:19 AM   #5
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Another twist,
I took it 5 mi down the road to the store, and noticed it leaking (steady dripping) on the ground, underneath the eng. towards the firewall side.
Looked underneath the TB and noting coming out of either hose ???
Looked as well as I could didn't see anything leaking out on the top?

Any other ideas ?

p.*.
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Old 02-26-2016, 10:48 AM   #6
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Dye/black light, if a pressure test leads to nothing.....
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Old 02-27-2016, 02:21 PM   #7
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Just a backyard mech. here, so no blacklight.

It drips about drop per second or two, not a stream or a drop every 30 min...
So I'm thinking I could see it with the naked eye, wondering if food coloring might work, only take a few drops, and you can eat it so it can't be too toxic... anyone ever done it.

p.*. haw many bolts in the lower intake manifold , I see 4 on the top, looks like 2 below near the power steering, can't find/see any by the thermostat side , are there any there ?
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Old 02-29-2016, 10:21 AM   #8
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Any thoughts on the food dye ??
Or any other way to confirm it is the intake gasket ?

It'* to big of a job for me, if needed, and probably costly to have a garage do it.

So I want to be sure
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Old 02-29-2016, 11:56 PM   #9
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