Question about 1997 Nissan Sentra

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Well, I checked the oil the day before, it showed I was low on oil on the dipstick, was planning on getting oil tommorrow. I drove about a half hr from my home, when I got to my desitnation the car was smokin, I checked under the hood and checked the dip stick again, didnt show any oil on the stick and there was oil all over the motor on the left side. I added 4 liters of oil then drove home, it still drips underneath but I think thats from all the oil around the motor, what else or where else would the oil come from? Could it be the oil filter, had an oil change beginning of the year, and was planning on doing it again in the coming weeks. As I have just moved and spent a great deal of money I have to time such expenditures.

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YOUR pcv valve is no good. It allows crankcase pressure to build up and oil will come out of your antennae if you drove it hard enough. Replace the pcv valve.

Posted on Sep 25, 2009

Testimonial: "I was very happy with the quick response, I will indeed have my mechanic look at that when I see him tuesday."

  • Ned C Cook
    Ned C Cook Sep 26, 2009

    Good Luck, I hope that takes care of it. You can check and change it yoursel so you can use the car. The pcv valve is a check valve located in the valve cover, top of engine and it sticks in a ghole with a hose attached to it that is about 1/2 in in diameter. In fact, it should be the only hose sticking something in the valve cover. Pull that hose out of the hole and the metal thing on its end is the pcv valve. Pull it out of the hose and go get a new one, the very same thing. Have a friend take you to the car psrts store. You really shouldn't drive until this is done. While you are at it, you may want to put a can of stp in the engine just in case running out of oil started something with the brgs. The Stp can come out on the next oil chage. The pcv valve is about 1" long and has a small end for the hose and large end that goes in the valve cover. Shake the old one, it should rattle but not plugged up or stuck shut. After putting everything together and putting oil in the engine, start the engine and see that you have vacuum oat the end of the pcv valve you just installed. Happy trails. The valve itself is a few dollars



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