Evo oily air filter

Discussion in 'Engine, Fuel and Exhaust' started by HOLY DIVER, Dec 31, 2010.

  1. HOLY DIVER

    HOLY DIVER Junior Member

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    friend of mine has a 95 softtail and he is venting way to much oil out the air cleaner its dripping out and blowing all over the side the bike i told him 2 MAKE SURE the oil was not over filled (check it hot) he did in fact it was a little low i know on a twin cam it could be oil pump alignment but on a evo i don't know what 2 tell him?
     
  2. karlsbike

    karlsbike Active Member

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    Hi there Holy Diver
    Did this excess oil venting situation started happening suddenly, i.e .following an oil change/top up or is it something that has gradually developed? The first one is obvious, and the second could be a sign of excessive blow-by building too much pressure in the crank. Worn rings, in other words...
    Does this happen after the bike has been sitting for a while?
    It could also be the oil check ball needing cleaning/replacement. It is sitting under spring tension under one of the flat screwdriver slot type caps, and is an easy and cheap thing to check and replace (tip: don't use a srew driver to open it, use a coin that just fits in the slot and pliers).
     
  3. fin_676

    fin_676 Experienced Member Staff Member Moderator Contributor

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    It could be that the umbrella valves are past the end of their lives and will need replacing
    But other than that i think Karl had most things coverd

    Brian
     
  4. Breeze3at

    Breeze3at Well-Known Member

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    I'm with the umbrella valve suggestion. They are made of a type of rubber and get stiff or deform with age. They are easy to replace.
     
  5. Bud White

    Bud White Well-Known Member Retired Moderators

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    yep check the umbrella valves for sure
     
  6. Jack Klarich

    Jack Klarich Expert Member

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    There is also a fix to drill the drain holes a bit bigger in the lower rocker box:s