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Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 8861
Experience:  I am ASE Master Truck Certified.
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I have a c7 cat blowing some oil out the oil vent tube in my

Customer Question

I have a c7 cat blowing some oil out the oil vent tube in my motorhome enough to stain the mud flap what do you think
Submitted: 2 years ago.
Category: Medium and Heavy Trucks
Expert:  Cat Man replied 2 years ago.
Hi. Thanks for asking your question! I will try and help you out.
There are several things I have seen cause this.
First is a high oil level. If you have t already. I would check this first.
Second is a faulty air compressor. They can wear and elevate crankcase pressure an push oil from the cent tube.
Third is a faulty turbo. They can fail and allow exhaust to go down the oil drain back tube and elevate crankcase pressure.
Lastly is wear in the engine cylinders.
Please reply back if you need more help or have more questions. I am happy to assist.
Expert:  Cat Man replied 2 years ago.
Hey. I just wanted to see how things were going. Please let me know if you need more help. I am happy to assist. If my information was helpful, please leave a good or higher rating so that I receive credit. Thanks.

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