12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

96 12Valve bad blow-by and coolant in oil!!

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Old Oct 10, 2014 | 02:57 PM
  #21  
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Originally Posted by 4x4manonbroke
Tappet cover would leak oil on ground .. an Expansion plug .. maybe .. or a crack in the block somewhere .. BUT . Just cause you dont see the leak in the HG dosent mean it wasnt the issue .. Get some studs and get that bad boy back on the road !!
So it could possibly be an expansion plug? How could a failed expansion plug leak coolant into the oil? I'll stick the head back on first and see if it fixes it. Sure hope it does!
 
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Old Oct 13, 2014 | 07:02 PM
  #22  
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Not sure if there i any plugs behind the tappet ove that go into the Coolant system or not..
I wil open the manual and see what I can find...
 
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Old Oct 19, 2014 | 07:16 PM
  #23  
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Default AAAHHHHH!!!!!

Got the new head gasket on, did everything right... torqued it all down right. head was checked. Block is flat. Still dumping coolant in my oil! I am going to get to the bottom of this. I have a hankering that there is another place that the oil and coolant get cozy with each other... Does anyone know where?
 
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Old Oct 19, 2014 | 08:57 PM
  #24  
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I've read some other posts on other forums and starting to wonder if my "no vacuum" problem is linked to the white blow-by? Is there a chance that it is not coolant that is making my oil all frothy? My vacuum pump works a short time when the engine is started, and then completely cuts out. The bad white blow-by starts to appear after that...
 
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Old Nov 6, 2014 | 05:15 PM
  #25  
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There is some freeze plugs behind pushrod cover that could be ur problem
 
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Old Nov 6, 2014 | 11:14 PM
  #26  
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Do I have to pull the inj. pump to get to them?
 
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Old Nov 8, 2014 | 12:17 AM
  #27  
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YUP ..
 
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Old Mar 26, 2024 | 01:01 PM
  #28  
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Default Same issue I’m getting coolant in my blow by catch can

Trying to see if you ever figure out what the problem was. I’m running into the same right now. Can’t seem to find the problem. Already did the head gasket with arp studs, new oil cooler and still getting coolant out the crank case breather.
 
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