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Ask Chris (aka-Moose) Your Own Question
Chris (aka-Moose)
Chris (aka-Moose), Technician
Category: Car
Satisfied Customers: 1176
Experience:  16 years of experience
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I have a 2007 freightliner Columbia day cab 14 liter. It is

Customer Question

I have a 2007 freightliner Columbia day cab 14 liter.
It is building up pressure in motor and blowing oil pan gasket and oil out of dipstick
I have cleaned out breather pipe
replaced oil pan gasket
put new o ring in dip stick
Submitted: 1 year ago.
Category: Car
Expert:  Roy replied 1 year ago.

good afternoon my name is ***** ***** I will assist you.

the most common cause of this condition is bad piston rings that allow compression pressure into the crankcase resulting in what issues you have. the rings could be worn or broken. a cylinder leak down test will confirm this to be sure.


Customer: replied 1 year ago.
could it be the turbo or air compressor
Expert:  Roy replied 1 year ago.

yes, it could be the air compressor. it would need to be checked to confirm