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Smokes after idle, and only after idle

Discussion in 'Civic and del Sol - EG and EK' started by Cliff, Sep 28, 2007.

  1. Cliff

    Cliff Junior Member

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    just put a b18b1 LS in my ek hatch

    when i bought the motor, it was still in the sellers car, and it ran perfect, no smoke.

    my car now smokes after idle when its fully warmed up. no smoke during hard driving conditions. just idle.

    any ideas?

    TIA
    Cliff
     
  2. klyph

    klyph Dismember VIP

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    Check the PCV system, you probably need a new PCV valve.
     
  3. Cliff

    Cliff Junior Member

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    pcv valve is good

    i also want to make a note according to the first post

    it doesnt smoke at idle, it smokes after i give it gas after idling for a little bit at a red light etc.
     
  4. klyph

    klyph Dismember VIP

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    You sure it's oil smoke?
     
  5. Cliff

    Cliff Junior Member

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    im pretty sure it is, its not coolant because i def know what that smells like, its whiteish color, i cant tell if its blueish or not though
     
  6. klyph

    klyph Dismember VIP

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    White is coolant. Oil will be blue, obviously blue. Did you remove the intake manifold when you did the swap?
     
  7. Cliff

    Cliff Junior Member

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    i still cant figure out whats wrong with the engine.

    did a leakdown test, all within 4-8% leakage

    did a compression test, steady across all 4 cyl

    changed the pcv valve

    anything else i should do?
     
  8. Cliff

    Cliff Junior Member

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    btw its def oil, not coolant
     
  9. klyph

    klyph Dismember VIP

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    Valve stem seals :(
     
  10. Cliff

    Cliff Junior Member

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    :( sigh

    the valve stem seals wont make the leakdown numbers higher?

    and also, its burning oil in all 4 cylinders, because there is oil deposit on top of all 4 pistons when i took the spark plug out.
    what are the chances that all the valve stem seals on all 4 cyl failed?

    the only thing i can think of is oil is somehow getting into the intake manifold because all 4 is burning oil.

    sorry for all the newbie questions :)
     
    Last edited: Oct 6, 2007
  11. vtec919si

    vtec919si New Member

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    i had 3 hondas, and everyone of them had a valve steam seal leakage on all four cylenders
     
  12. klyph

    klyph Dismember VIP

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    The only way that oil would be in the intake would be through the PCV.
    Pull your intake mani, if there's oil in it, then it's the PCV, if it's clean, its your valve stem seals. While the intake mani is off, you can look at the valve stems to make sure.
     
  13. file-error

    file-error New Member

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    what did you do to the fuel system,, is it running rich? to much gas will give you a white smoke even after it is warmed up, you wont see it while driving

    also, did you bypass your cat or gut your cat, a factory tune doesnt burn all the gas , normally the cat will catch the extra so you wont see it comeing out of the tail pipe.

    is the back of you car getting little black spots
     
  14. Cliff

    Cliff Junior Member

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    the car is running stock LS ecu right now, car has no cat, 2.5in header back. yes the car is gettin carbon on the back.

    its def oil burning because the smell is oil...and it smells rich lol, but oil is def being burned up

    however it doesnt burn enough for me to notice on the dipstick
     
  15. Cliff

    Cliff Junior Member

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    from what my friends are telling me, if valve stem seals are shot, it usually blows smoke at cold startup, or any startup.

    my car doesnt smoke at startups
     
  16. klyph

    klyph Dismember VIP

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    You sure it's not just running rich?
     
  17. Cliff

    Cliff Junior Member

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    im almost positive, the car is running on stock ecu, with no cat, ive had other cars with no cats and it doesnt smoke like that.

    and theres oil deposits on top of the piston
     
  18. klyph

    klyph Dismember VIP

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    Any CEL's?
    How old is the o2 sensor?

    If you're sure it's not just rich, it could also be the head gasket or the valve cover seals on the spark plug tubes, but that usually causes a misfire if it's leaking down into the cylinder.
     
  19. Cliff

    Cliff Junior Member

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    i have a code for evap voltage too high, dont know if that has anything to do with it.

    the o2 sensors are brand new, just replaced them 500 miles ago, no O2 CELs
     
  20. klyph

    klyph Dismember VIP

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    evap voltage?
    Any idea what that's about?
     
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