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Smoke from the oil drain plug??

This is a discussion on Smoke from the oil drain plug?? within the General Help forums, part of the LSx Technical Help Section category; My daughtor's car (2001 Plymouth Neon) has a low oil lpressure light at low RPMs. I decided to add a ...

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    Smoke from the oil drain plug??

    My daughtor's car (2001 Plymouth Neon) has a low oil lpressure light at low RPMs. I decided to add a heavier weight oil this weekend to see if that would make it last at least a little longer. When I was draining the oil, I noticed that white smoke was coming out of the drain plug hole. The engine was cold - it hadn't been started in a day, and all I did was start it and drive it up on ramps. Any ideas on what would cause that?

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    Quote Originally Posted by Neil View Post
    My daughtor's car (2001 Plymouth Neon) has a low oil lpressure light at low RPMs. I decided to add a heavier weight oil this weekend to see if that would make it last at least a little longer. When I was draining the oil, I noticed that white smoke was coming out of the drain plug hole. The engine was cold - it hadn't been started in a day, and all I did was start it and drive it up on ramps. Any ideas on what would cause that?
    Blow by?

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    Yo Da Lin The Valley..... astyles's Avatar
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    Quote Originally Posted by jambofla View Post
    Blow by?
    +1

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    Is that caused by bad rings? It's sounding like this engine needs a rebuild.

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    I don't think it would have smoke coming out a day after it had been shut off. Any blowby should have dissipated in that time frame. A quick compression check and cylinder leak down will let you know what's going on.

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    Ring packs are probably frozen allowing blow by.
    Plugged PCV and/or carbon/varnish build up around the ring packs are the two normal suspects.
    I would AutoRX it and make damn sure her PCV is fully operational.
    http://www.auto-rx.com/
    Check the PCV and make sure it is fully operational. Crankcase pressure must be relieved somewhere or the rings will not seal properly.
    Last edited by Sarge; 06-08-2009 at 03:24 PM.

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    Some light reading on PCV/Crankcase pressure et al....
    PCV/Catch Can/Crank Pressure

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