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Cat 320bl engine oil leaking??????

will ยท 2011-01-19 21:26

On top of the valve cover there is a breather tube that is leaking some oil. What could the cause possibly be? Thanks.

Replies6
  1. #1willie592011-01-19 21:31

    Do you mean that breather pipe is leaking oil at connection to valve cover, or the breather pipe is leaking a considerable amount of oil out of the end of the pipe?

  2. #2will2011-01-19 22:57

    At the connection to the valve cover. Thanks

  3. #3willie592011-01-19 23:02

    If I remember the BL correctly, that crankcase vent gizmo simple fits into a hole in the casting of the valve cover, it's sealed with an o-ring. Over time, engine heat causes that o-ring to get hard as a brick and it starts seeping oil. Replace the o-ring seal and it should fix your leakage.

  4. #4will2011-01-19 23:09

    Thanks i will replace it and see what happens.

  5. #5dsichewski2011-01-20 11:01

    Bingo....Atco you are completly correct!

  6. #6willie592011-01-20 18:48

    LoL...well, we'll see.