1993 Mazda MX3 Oil In Air Breather

1993 MAZDA MX3
160,000 MILES • 6 CYL • FWD • AUTOMATIC
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WEAKND_KNEES
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  • 2 POSTS
I have already changed out my PCV valve. And I have oil coming into my air breather. I have wiped it out a couple of days ago. Oil just seems to return. My throttle body has oil caked in there also. WHY?
Aug 5, 2008 at 9:21 PM
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MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
Hi there,

I would be checking foe excessive engine blow by, that is compression leaking past the rings and over pressurizing the sump, this will carry excessive atomized oil out through the PCV and into the induction system, have a leak down test done first.

Mark (mhpautos)
Aug 6, 2008 at 7:59 AM
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