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05 Honda Civic – Carbon Monoxide Inside the Car

Home Forums Stay Dirty Lounge Service and Repair Questions Answered Here 05 Honda Civic – Carbon Monoxide Inside the Car

This topic contains 10 replies, has 3 voices, and was last updated by Sam Alaimo Sam Alaimo 3 months ago.

  • Creator
    Topic
  • #988814
    Kia L
    Kia L
    Participant

    The carbon monoxide detector has a reading of 9-12ppm inside the car while the car is in idle or moving. It went down to zero after shutting down the vehicle for about a hour or so.

    I didn’t see any exhaust leaks. The only problem with the car is water leaking into the trunk.

    Please help!

    • This topic was modified 5 months, 2 weeks ago by Kia L Kia L.
Viewing 10 replies - 1 through 10 (of 10 total)
  • Author
    Replies
  • #988820
    Nightflyr *
    Richard Kirshy
    Participant

    Suggest you look for any black soot build up on all piping and connections from the exhaust manifolds to the tail pipe

    #988988
    Kia L
    Kia L
    Participant

    Thank you for replying. To look for black sooth, I have to disconnect all pipes and possibly clean the pipes. Is it right? I wasn’t sure if there is a way to flush out.

    #988990
    Nightflyr *
    Richard Kirshy
    Participant

    Ummmm no.
    You need to carefully inspect the externals of the exhaust system, piping clamp joints etc, for signs of soot ( meaning an exhaust leak ) that would may find its way in to the passenger compartment

    See if any of these are useful to you:
    https://www.youtube.com/results?search_query=signs+of+a+exhaust+leak

    #989359
    Kia L
    Kia L
    Participant

    Thank you. I found and fixed the leaks near the catalytic converter. However, now there is another odd scenario

    The carbon monoxide detector has a reading of 9-12ppm sometimes inside the car before I started my car (very first time starting the car for the day). Once I started driving, sometimes it came down to 0 with or without my windows down.

    What could be the issue?

    #989368
    Nightflyr *
    Richard Kirshy
    Participant

    If your meter is reading with out the car running you have 2 possibilities:
    First your meter is defective
    Second is over saturation of carbon monoxide.
    Might try leaving the windows open for a few hours a day and see if things change.

    #989485
    Kia L
    Kia L
    Participant

    When you said over saturation of carbon monoxide, do you mean carbon monoxide is more than what is naturally mixed? does it mean something is malfunctioning?

    #989489
    Nightflyr *
    Richard Kirshy
    Participant

    I meant that the materials with in the interior absorbed the CO and needs to air out.

    #989494
    Kia L
    Kia L
    Participant

    Do you mean this?

    “When I first had CO issue inside the car, the CO was absorbed to the materials within the interior. I need to
    keep the windows open for a few hours a day to air out the CO from the vehicle.”

    • This reply was modified 4 months, 2 weeks ago by Kia L Kia L.
    #989501
    Nightflyr *
    Richard Kirshy
    Participant

    Yup.

    #990379
    Sam Alaimo
    Sam Alaimo
    Participant

    Hey, I know this is kind of old, but did you see anymore CO in the car? Besides for the leaks you fixed, there is a possibility that the exhaust could come through a bad trunk seal when sitting at idle. Hope it is all good now!

Viewing 10 replies - 1 through 10 (of 10 total)

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