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Thread: Lower breather tube

  1. #1
    DX User
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    1986 Honda Accord LXi
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    Cool Lower breather tube

    1986 Accord LXi, 330k miles

    I'm pretty sure that my oil leak is coming from the lower breather tube.

    Question? Is there a substitute tube can I use? What would be the diameter? Or is the $40 online part my only option?


    (Backstory)
    Last summer I changed the oil pan gasket, upon reassembly decided to reused the lower breather tube.
    The leak appears to be dripping down to the exhaust pipe causing a bit of oil smoke. The leak is only noticeable just after a drive…. it drips into a puddle, then stops for the rest of the night. My guess is when there's crank case pressure the oil gets forced out around the connections (BTW, I plan on going through the entire PCV system just to rule out any blockage).

    Also, I can rule out Dizzy (replaced), no evident oil around area. Replaced valve cover gasket (dry just below cover). Replaced the oil filter housing gasket and oil pressure sending unit seal.
    Last edited by Trent Von; 02-27-2017 at 08:00 PM.



  2. #2


    Join Date
    Nov 2004
    Vehicle
    88 LXi
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    Knoxville TN
    Posts
    5,208

    Re: Lower breather tube

    Quote Originally Posted by Trent Von View Post
    1986 Accord LXi, 330k miles

    I'm pretty sure that my oil leak is coming from the lower breather tube.

    Question? Is there a substitute tube can I use? What would be the diameter? Or is the $40 online part my only option?


    (Backstory)
    Last summer I changed the oil pan gasket, upon reassembly decided to reused the lower breather tube.
    The leak appears to be dripping down to the exhaust pipe causing a bit of oil smoke. The leak is only noticeable just after a drive…. it drips into a puddle, then stops for the rest of the night. My guess is when there's crank case pressure the oil gets forced out around the connections (BTW, I plan on going through the entire PCV system just to rule out any blockage).

    Also, I can rule out Dizzy (replaced), no evident oil around area. Replaced valve cover gasket (dry just below cover). Replaced the oil filter housing gasket and oil pressure sending unit seal.
    Quick fix is put two worm clamps on either end might work.
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

    Oldblueaccord <<< MY YOUTUBE PAGE!

  3. #3
    DX User
    Join Date
    May 2016
    Vehicle
    1986 Honda Accord LXi
    Location
    Seattle
    Posts
    31

    Re: Lower breather tube

    Cool, you know... it might just be that easy. I'll give it a go!

  4. #4


    Join Date
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    88 LXi
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    Re: Lower breather tube

    As far as a real replacement I dont have a clue. As you stated its a bitch getting that on with the oil pan at the same time.

    I just opened the water clamps and rethreaded them back together.

    I have had good luck with the ones that come from Home Depot and there pretty cheap and NOT Chinese.
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

    Oldblueaccord <<< MY YOUTUBE PAGE!

  5. #5

    Dr_Snooz's Avatar
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    Re: Lower breather tube

    It's possible that the oring seal between the breather box and the block is leaking.
    Dr_Snooz

    "I like to take hammers, and just break stuff, just break stuff." - Beavis


    1989 Honda Accord LX-i Coupe, 240k miles, MT swap, rear disc swap

    Shop manual downloads available here: CLICK TO VIEW

  6. #6


    Join Date
    Nov 2004
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    Posts
    5,208

    Re: Lower breather tube

    I Didnt know there was one there!
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

    Oldblueaccord <<< MY YOUTUBE PAGE!

  7. #7

    Dr_Snooz's Avatar
    Join Date
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    Re: Lower breather tube

    Lol
    Dr_Snooz

    "I like to take hammers, and just break stuff, just break stuff." - Beavis


    1989 Honda Accord LX-i Coupe, 240k miles, MT swap, rear disc swap

    Shop manual downloads available here: CLICK TO VIEW

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