1999 Taurus oil in breather tube

RGIG58

MEMBER
1999 FORD TAURUS

I have a 1999 Taurus with the 3.0L DOHC. When I changed my air filter I noticed oil in the air inlet tube running down into the filter. It is coming from bank 2 valve cover breather tube that connects to the corregated air inlet tube. Bank 1 is clean. What would cause this? Can I disconnect from the air inlet and leave the breather tube open while plugging the hole in the air inlet tube? This is not the PCV tube.

1 Reply

INDYUKE

MECHANIC
416 POSTS

If you do that, you might want to place some kind of filter over that hole. I believe that tube belongs to the PCV system and pulls filtered air from the airbox. You might also want to check and/or replace the PCV valve.

The PCV system pulls filtered air from the airbox, through the tube you were describing, through the crankcase, through the PCV valve and into the intake. If the PCV valve is bad, the crankcase will vent out the tube into the airbox, or if that avenue isn't open, through some other means. Which can be bad as those other means tend to be through seals which you want to keep in place. Good luck.