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How to find water in oil leak, project

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Old Mar 21, 2006 | 01:16 PM
  #1  
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From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
How to find water in oil leak, project

Need some support, hints and ideas, through this "project".

Last year I found some water in my oil, so I replaced both head gaskets and milled the heads. The old gaskets looked fine and when I started the engine I still got water in my oil so I put the car in a garage for the winter.

Now its time to find the leak and I want some help/hints on how to find the leak.

Today I made a pressure test on the cooling system, it went from 15 to 8 psi in about 2hours, cold engine.

Step 1.
I want to empty the intake and heads completly of coolant before I take the intake of to se if I got coolant in the intake valley, how do I do that?

Step2.
Make some plates and put on the heads and block of coolant hose from the radiator and pressurize the system again to see what happens.

Any other ideas or hint?
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Old Mar 21, 2006 | 01:28 PM
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Step 1: Take the drain plugs out of the bottom of the block. THey're just a regular plug on the driver's side, and the knock sensor on the pass side.

What kind of sealer did you put on the head bolt threads?
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Old Mar 21, 2006 | 01:33 PM
  #3  
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From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
Ok, will take the KS out and the bolt on drivers side tomorrow....

No sealer on bolts, its a Motown block so the thread doesnt go into the water channels.

/N.

Last edited by gta324; Mar 21, 2006 at 01:47 PM.
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Old Mar 21, 2006 | 04:30 PM
  #4  
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What heads? It has been rumored that some aftermarket heads don't quite fit up well on some aftermarket blocks. I saw photos of one such setup where the holes in the deck were not even covered by the heads, but that was a Brodix/Dart combination, IIRC. Too bad the search is dead - It wasn't that long ago.
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Old Mar 21, 2006 | 11:41 PM
  #5  
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From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
Heads are Jegs 197cc ( yes small I know will update to AFR210cc when I have the $$$)

Hopefully I will drain the coolant today and lift the intake of ad see what it looks like underneath...

To be continued...............

/N.
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Old Mar 22, 2006 | 11:43 PM
  #6  
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From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
Update... to keep the thread alive

Pulled the oil plug and let the oil out.
Pressureized the system and squized the raditor hose and after a while antifreeze was dripping from the oilplug, so there is def a leak.

Drained the system yesterday and will hopefully lift the intake today.

/N.
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Old Mar 23, 2006 | 01:09 PM
  #7  
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From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
Pulled the intake today and I didnt see any "Pure" antifreeze floating around so I guess the leak have to be in the heads/block or?

Next step?
1. Should I pull the heads?
2. Fill it up with water and block of the heads and pressurize the system again to see if I get any clues?

/N.
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Old Mar 23, 2006 | 01:12 PM
  #8  
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From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
dubble post ...........sorry

Last edited by gta324; Mar 23, 2006 at 01:27 PM.
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Old Mar 23, 2006 | 01:12 PM
  #9  
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From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
Tripple post ...................

Last edited by gta324; Mar 23, 2006 at 01:27 PM.
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Old Mar 23, 2006 | 01:15 PM
  #10  
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From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
Sorry ......

Last edited by gta324; Mar 23, 2006 at 01:26 PM.
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Old Mar 23, 2006 | 01:21 PM
  #11  
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From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
.................

Last edited by gta324; Mar 23, 2006 at 01:27 PM.
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Old Mar 26, 2006 | 03:25 AM
  #12  
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From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
Found a small crack in No4 cylinder bore......
No more driving this year.......
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