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LB7 Performance Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines Related To Performance And Longevity

Coolant leak

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  #1  
Old 12-30-2009, 02:24 PM
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Default Coolant leak
I have a small leak of coolant coming from the front of my engine but can't find where and it only leaks when my engine is cold
 
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  #2  
Old 12-30-2009, 03:32 PM
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maybe the water pump is starting to go bad?

how many miles are on the truck
 
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  #3  
Old 12-30-2009, 03:34 PM
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194000 miles....
 
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Old 12-30-2009, 03:39 PM
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id look at the water pump first and check the coolant hose behind the fan pulley
 
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  #5  
Old 12-30-2009, 07:12 PM
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^x2.
 
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  #6  
Old 01-04-2010, 01:25 PM
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Umm now I don't leak coolant... I didn't do anything but I marked my overflow tank and it stop it leaking but started when it was super cold but now when it warmed up to 10 degrees it stopped leaking. Odd
 
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