Question about 1999 Daewoo Lanos

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Motor oil spitting out from the dipstick. No smoke, no blow by.

Whenever the engine is hot, the oil spits out from the the dip stick in droplets. no smoke, no blow by, no oil consumption. what s causing the problem? would this be ok?

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  • emerlito Feb 26, 2009

    yeah, I have cleaned the pcv valve,. it was not blocked though it has some oil residue in it. I can feel the normal air pressure in the dipstick whenever I pulled out the stick. after cleaning the pcv valve the engine runs smoothly.

  • emerlito Mar 09, 2009

    I am not sure whether one of the hose lines that I cleaned was the positive crankcase vent. there was no valve like in other engines, that you can actualy see the valve inserted in the gromet.

    there the 3 layers in the a15sms engine, the valve cover, the cam shaft? then the cylinder head. there is a line conected into the cam shaft going to a metal tube conected to the drive shaft? just before the crankcase, then there is a hose line connected to the valve cover going to the hose of the air cleaner, there is a hose diverted from the middle of that hose connected to the trottle body. these hoses have no valve in it. just pure two way hose emmiting hot pressure from the engine, its like a breater.. you can feel an air presure coming out from the dip stick.. technically a blow by of gasses and because of this, it drives out droplets of oil.. i have inquired about a pcv valve from daewoo parts and they gave me a picture which is similar to a sensor with electronic plug in it and two hoses.. but i can find it anywhere in the engine... what could be the solution sir?

  • emerlito Mar 11, 2009

    mileage 180.. if you pull the hose i can feel no suction, even when you rev it, i did check that because my lancer has a very simple ventilation cycle.. it has a good suction and when you try to pull the hose it will go wild, signifying good system right? and that is from the pcv valve going to the intake.. but in my lanos, no suction but with hot air coming out from the hose. beside that metal wher the hose is connected there is a small metal tube with a small hose connected to a sensor attached to the body,, electrical sensor where it vacuum air out of the intake... then 5 inches away from that is the oxygen sensor... i dont get it... and icant find any repair manual for A15sms sohc engine. i tried to decrease the oil, just puting it just above min and i will observe. there is a presure of air coming out of the dip stick but during idle. when you rev it, theres none. i suspect compression problem, because when i hit the accelerator it seems like the engine has no enough power to glide. you need to push the pedal slowly to get in to desired speed. what do you think?

  • Roberta Smith
    Roberta Smith May 11, 2010

    can you feel any air pressure from it ?



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  • Daewoo Master
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Have you checked for a PCV valve plugged? Not sure if there is one an that, but would sure look for one. Crankcase ventilation somewhere.

Posted on Feb 25, 2009

  • Mike Butler
    Mike Butler Mar 10, 2009

    Where that hose is connected to the throttle body, if you pull that hose off, do you feel any vacuum(suction) at all? (if not at idle, try revving engine slightly to see if vacuum opens.) I have to confess, I'm not real updated on the Daewoo, and i'm not having real good luck finding info that I need, or would like to have available, like the PCV system set-up on that, but I did visit the Daewoo forum, and it appears that others are having the same problem your having.

    What kind of mileage is on that engine?

  • Mike Butler
    Mike Butler Mar 11, 2009

    I would go to this link if I was you, and sign up & post a request from one of the guys who received that manual, free & see if they would send it to you. Keep in touch with that forum, it appears to have lots of info that may be helpful to you. Good Luck. Keep me posted on your progress.


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  • Contributor
  • 19 Answers

Pvc valve, its chear and easy to replace

Posted on Jan 25, 2013

  • charles thompson Jan 25, 2013

    sorry for misspelling , its cheap not chear



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