oil in breather

Discussion in 'Engine, Fuel and Exhaust' started by al bell, Jul 19, 2013.

  1. al bell

    al bell New Member

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    hi,al from ontario canada here. my question is i have a 07 roadking with 11,000 miles on it and i,am getting oil in my breather. oil level is right where it is suppost to be half way on the dipstick when cold.any ideas of why this is happening and any dyi fixes.thank,you
     
  2. Hoople

    Hoople Account Removed

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    It would be helpful to know how much oil your seeing over how many miles. What oil weight are you using. Has it gotten worse over time?
     
  3. dolt

    dolt Senior Member Contributor

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    With only 11K miles, ring seal shouldn't be an issue but a comression and leakdown test will confirm. Some will tell you to run your oil level 1/2 quart low but I have never subscribe to that approach.

    Make sure your air filter is clean. You could replace the head breathers with the units that were upgrade in 2010; some have reported that those breathers have reduced blow by.

    I vent breathers to the atmosphere; releaves crank case pressure and vents any oil mist to a catch can that separates the oil from the mist before the mist exits into the atmosphere. I don't want the oil mist recirculated back into the combustion chamber via the OEM internal breathers.

    As Tank points out, blow by on the TC engine is a reality; some blow by more than others and there are different ways to handle it.
     
  4. Jack Klarich

    Jack Klarich Expert Member

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    This could be a misaligned oil pump issue also, oil in the breather is a common problem with Twin Cams after hard and long distance riding, Dolt suggests checking your breather hoses, I agree, they can and will collapse
     
  5. Jack Klarich

    Jack Klarich Expert Member

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  6. HDDon

    HDDon Experienced Member Contributor Retired Moderators

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    I think Dolt has you covered here. First check the AC and clean or replace. I am a firm believer in venting to the atmosphere, it works on my Evo and I have been fortunate with the TC as it has not been a problem yet.
     
  7. al bell

    al bell New Member

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    thanks guys for the info will check breather tubes will let you know how things go thank you again
     
  8. HOLY DIVER

    HOLY DIVER Junior Member

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    hmmmm i'm thinking here if he has excessive crankshaft runout would that be about the same as a misaligned oil pump?07 was not a good year for crankshafts (or 03 for that matter i just replaced mine due to run out)
     
  9. dolt

    dolt Senior Member Contributor

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    Big difference between '03 and '07 cranks, although you are correct about '07being an anomaly. Any crank can be tweaked with enough abuse; however, the '03 crank did not have any inherent quality control issues like the '07. You were probably just unlucky.
     
  10. HOLY DIVER

    HOLY DIVER Junior Member

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    yea i'm guessing i'm unlucky also,i installed the forged SE crankshaft i sure hope my luck turns around i can't afford to keep buying crank shafts lol