Duramax Diesels Forum Truck of the Week
  #16  
Old 09-08-2018, 09:08 PM
Jacy_dzlguy Jacy_dzlguy is offline
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Lot of places coolant can go beside head gaskets..
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  #17  
Old 09-09-2018, 05:20 AM
gmac32 gmac32 is offline
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The sad seam is on the side tanks where the aluminum and plastic crimps together. I have replaced 2 and they were leaking about in the same spot. I wouldn't just assume it headgaskets. It could be many things
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  #18  
Old 09-09-2018, 05:34 AM
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NC-smokinlmm NC-smokinlmm is offline
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I'd bet radiator seam...
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  #19  
Old 09-09-2018, 11:00 AM
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b.d.keathley b.d.keathley is offline
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Mann I hope so.
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  #20  
Old 09-09-2018, 06:00 PM
mopar3 mopar3 is offline
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Head gasket failure will blow out coolant when running with a heavy load due to excessive pressure build up in the system. Did you spit any coolant out of the pressure bottle?
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  #21  
Old 09-09-2018, 06:09 PM
mopar3 mopar3 is offline
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The combustion pressure is always higher than the coolant pressure. So when they leak you pump combustion gases into the coolant when the engine is running. Causes air pockets. overheating, loss of heat, constant bubbling in the coolant tank. May even see soot in the coolant bottle. When they really are bad they will leak coolant into the cylinders when the engine is off. May see white smoke and rough running at start up can hydro lock the motor bend rods ect.
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  #22  
Old 09-09-2018, 07:15 PM
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b.d.keathley b.d.keathley is offline
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Quote:
Originally Posted by mopar3 View Post
Head gasket failure will blow out coolant when running with a heavy load due to excessive pressure build up in the system. Did you spit any coolant out of the pressure bottle?
No none of that. No spitting no soot nothing. Looksall good other than a bit low. I see no max fill level only min level which is at the complete top of the reservoir. Dont see why. But other than that no other problems like my Lly.
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  #23  
Old 09-09-2018, 07:16 PM
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Bty cant figure out how to upload the photo of the new truck
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  #24  
Old 09-18-2018, 06:21 PM
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b.d.keathley b.d.keathley is offline
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Quote:
Originally Posted by mopar3 View Post
The combustion pressure is always higher than the coolant pressure. So when they leak you pump combustion gases into the coolant when the engine is running. Causes air pockets. overheating, loss of heat, constant bubbling in the coolant tank. May even see soot in the coolant bottle. When they really are bad they will leak coolant into the cylinders when the engine is off. May see white smoke and rough running at start up can hydro lock the motor bend rods ect.
I donít understand the coolant reservoir. It just has a min level right at the top. There is no max. Even when I try to put more in it just goes into a small weephole within the reservoir never filling higher.
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