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Robert R
Robert R, ASE Certified Master
Category: Dodge
Satisfied Customers: 3933
Experience:  Dodge Master Certified, Dodge Sprinter Certified
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The oil separator mount on top of valve cover is spraying

Customer Question

Customer: the oil separator mount on top of valve cover is spraying oil everywhere and running rough
JA: Thanks. Can you give me any more details about your issue?
Customer: 2003 dodge sprinter 2500, Mercedes 5 cylinder
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Customer: from the hose that lead to the seporater
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Submitted: 10 months ago.
Category: Dodge
Expert:  Robert R replied 10 months ago.

Hello, welcome and thanks for asking your question. My name is*****'m a Certified Auto Technician with 28+ years experience. I will do my best to assist you. please keep in mind that I may need to ask questions of you before I can answer. When you reply please feel free to add as much detailed information as possible pertaining to your concern.

It sounds like you may possibly have a bad cylinder and/or piston. The oil spray and rough running engine leads me to believe this. Has a compression test been ran on the engine? If not, this will be the first recommended diagnostic test to determine if there is internal engine damage..

Keep me posted...

Thank you,

Robert

Customer: replied 10 months ago.
Could it be the oil separator
Expert:  Robert R replied 10 months ago.

The oil separator is designed to do nothing but attempt to separate oil from crankcase vapors and drain the oil back into the engine so that it won't get drawn in by the turbo. Oil spray from the oil separator is a symptom of excessive crankcase pressure. When this happens, the oil separator cannot separate the oil fast enough and will cause oil spray through the separator. The rough running engine leads me to believe that the loss of compression past the rings is causing the excess pressure in the crankcase and the resulting oil spraying out the oil separator.

I've also seen this condition actually blow oil back up through the dipstick tube when the engine is running and the dipstick is not fully seated in the bore. Try removing the engine dipstick with the engine running and see if oil blows up the dipstick tube..

Keep me posted...

Thank you,

Robert

Customer: replied 10 months ago.
it try's to blow up the dipstick tube...
I was hoping for an easy repair..Like clogged air filter or separator
Expert:  Robert R replied 10 months ago.

Any time I've had those symptoms, each vehicle needed engine repair. Compression test is the best starting point to determine if you want to spend the money on engine repair if it ends up going that way..

Keep me posted and let me know if you have any additional questions...

Thank you,

Robert

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Customer: replied 10 months ago.
now there's no temp repair to remove the pressure??
Expert:  Robert R replied 10 months ago.

No, definitely not, If there is compression loss past the piston rings, there would be no way to stop this problem from happening other than doing a proper repair on the engine..