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I just had a 2008 c15 cat rebuilt and I still have a oil leak

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I just had a...
I just had a 2008 c15 cat rebuilt and I still have a oil leak out of the breather hose, any idea why?
Submitted: 1 year ago.Category: Industrial Equipment
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Answered in 1 minute by:
4/2/2016
Mechanic: Cat Man, Cat Engine Expert replied 1 year ago
Cat Man
Cat Man, Cat Engine Expert
Category: Industrial Equipment
Satisfied Customers: 9,008
Experience: I am ASE Master Certified.
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Thanks for asking your question. I will try and help you out.
Was the air compressor and turbos replaced with the rebuild?
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Customer reply replied 1 year ago
Compressor was not the turbos, it started leaking after I did a valve adjustment 8 months ago and I just rebuild the engine last week
Mechanic: Cat Man, Cat Engine Expert replied 1 year ago
Thanks for the information.
I have seen both an air compressor and a turbo cause oil to leak out of the breather. The air compressor has cylinders that can wear and cause this. A turbo can fail and allow exhaust to go down the oil drain back tube and elevate crankcase pressure. If the cylinders, compressor, and head have been replaced. I would next suspect one of the turbos.
Please reply back if you need more help or have more questions. I am happy to assist.
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Cat Man
Cat Man
Cat Man, Cat Engine Expert
Category: Industrial Equipment
Satisfied Customers: 9,008
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