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Buddy, Technician
Category: Heavy Equipment
Satisfied Customers: 730
Experience:  20 years experience. Freightliner tech for last 14 years
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Heavy Equipment

MBE 4000 blowing oil out of blow-by tube any ideas ? lots of oil !

Submitted: 6 years ago.
Category: Heavy Equipment
Ask Your Own Heavy Equipment Question
replied 6 years ago.
Welcome to JA. I am Buddy and I will try and help you out.

I would recommend running engine on dump and getting crankcase pressure checked. The most common problem for your symptoms are a burnt up cylinder,turbo, or air compressor. With a crankcase pressure test , that would narrow problem down. I hope this helps you out. If you have anymore questions just.

Customer reply replied 6 years ago.
Engine runs fine no misses no smoke just blows out oil if it was a turbo or a cylinder I think you would notice something different in how it runs !
Buddy, Technician replied 6 years ago.

Thanks for the reply. If it was not smoking, that would more then likely rule out the turbo or a cylinder. Only other things i have seen that caused this, is to much oil in the system and i have seen the constant throttle valves (ctv)cause this also. I hope this helps you out. I would definatly recommend getting the crankcase pressure tested. If you have anymore questions, just ask.



Customer reply replied 6 years ago.
What is the chance this could be caused by a plugged air filter ?
Buddy, Technician replied 6 years ago.
I never seen a stopped up air filter cause excessive blowby. If it is stopped up I would go ahead and change it tho. Normally you will get low power and black smoke


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