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Oil backflow problems 700 1987

posted by  smittyj23 on  Fri Feb 8 05:12 CST 2008
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last visit: Tue Jun 18 18:20 CST 2013
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I have a 1987 Volvo 740 Turbo. The problem I am having is that oil seems to be back pressuring and getting on the alternator. This is coming out of what I call the elbow that connects a hard plastic hose to the elbow and another hose that goes to the crankcase breather box that is on the drivers side of the motor. It is a small black plastic box that oil goes into to the oil pan. I guess it comes from the turbo because that is where the line starts.

I was told to take compressed air and brake parts cleaner and clean the box out and replace it. I did that as well as replacing the o-ring but I am still having problems. If anyone knows the elbow that I am talking about or whatever you want to call it it seems that the oil is getting backed up and going out there.

This is causing me headaches. Already had to get a new alternator. I don't know what to do. Do I have to replace what is called the Crankcase Breather Box?

I really hope that someone out here can help me.

Thank you.






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