Water in the oil pan - TCCoA Forums
 
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post #1 of 11 (permalink) Old 10-15-2006, 01:10 PM Thread Starter
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Water in the oil pan

I've been working on my grandson's car and replaced the head gasket set and torqued it according to specifications. After getting it all back together it started up fine and ran smooth 10 minutes or so. When I started to accelerate, it died. When I checked, the oil pan was full of water and coolant again. I took a plug out and it had water in it. Can water leak through the intake mainfold into the cylinders or does anybody have any other suggestions?
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post #2 of 11 (permalink) Old 10-15-2006, 02:08 PM
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I have not had my intake off or heads yet so I cannot say.
But there will a bunch of people in a bit that will be able to.

Question though. Did you get lucky and pick the one plug that had water in it or were they all wet?

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post #3 of 11 (permalink) Old 10-15-2006, 02:13 PM
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When you pulled the heads did you send them out to a machine shop to be checked for warpage, resurfaced and pressure tested for cracks that the human eye can't see?

4.6 engines come with aluminum heads so small cracks aren't noticeable, when they heat up they expand allowing the small cracks that we can't even see to become very large, if you replaced both gaskets and torqued it accordingly than it sounds to me like a cracked head. Sorry to be the bearer of bad news.

Of course if this not the case than I am at a complete loss of what else it could be.
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post #4 of 11 (permalink) Old 10-15-2006, 02:30 PM
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You said the oil pan was full of water "again". Did this engine overheat and blow a head gasket? If so there is a very good chance one or both of the heads warped. If this the case you will not be able to get them to seal properly without having them resurfaced.
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post #5 of 11 (permalink) Old 10-15-2006, 02:57 PM
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did you re-use the head bolts?
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post #6 of 11 (permalink) Old 10-15-2006, 11:12 PM
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also, the head gaskets are left- and right-side specific.....if they were inadvertantly swapped, it might cause this
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post #7 of 11 (permalink) Old 10-17-2006, 12:36 PM Thread Starter
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I drained the water out and got 3.5 gallons of antifreeze out of the oil pan before any OIL came out of the pan. If there is a crack in the head it has to be as big as your fist to let 3.5 gallons into the oil pan! The water/anitfreeze goes into the intake manifold, can it be cracked or something to allow the water to go down into it? I put all new gaskets, all new bolts, torqued to specs and the engine started the first try and ran for 10-15 minutes before it sputtered and died and all the antifreeze went into the pan. Did I do something wrong?

This is a 95 Thunderbird with 4.6 V8.
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post #8 of 11 (permalink) Old 10-17-2006, 07:56 PM
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Compression test the motor and than start taking a better look at the intake. Running a compression test will tell you if you did anything wrong changing the head gaskets. If the numbers come back equal or very close to it than start taking a better look at the intake.... if I'm totally wrong on this than I'm sure someone will correct me.
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post #9 of 11 (permalink) Old 10-17-2006, 08:13 PM
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Hey,
Not sure if this will help you but I just spent some time replacing the oil filter adapter gasket. The gasket has the coolant passage for the lower radiator hose and 2 for the oil filter. Maybe the gasket decided to leak coolant into the passages for the oil. That could be your problem, but I cant be 100% sure of that.
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post #10 of 11 (permalink) Old 10-17-2006, 08:35 PM
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Remember he had water on top of the pistons.

Did you say all the pistons were wet?

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post #11 of 11 (permalink) Old 10-18-2006, 12:22 AM
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are the core (freeeeze) plugs ok behind the front cover and rear main cover?

Dad always said,"Knowledge is limited but stupidity knows no bounds."
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