Odd Catch Can / TRD S/C Behavior?

Discussion in 'F/I Mods & Tuning' started by Aspen_S/C, Nov 29, 2014.

  1. Aspen_S/C

    Aspen_S/C Member

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    Hi gang,

    I am running a TTC oil catch can on my TRD S/C’d Tacoma. Thus far it has been seemingly great, drain it on a regular schedule. Currently I am on a month long road trip, a few thousand miles. When I installed it, I just extended the PCV line that would otherwise go straight to the S/C to the catch can inlet on top as you do then added line from the side / outlet and sent that to the S/C a the instructions imply.

    I used just regular hose to extend the PCV line to the inlet, figured with pressure it would be fine. So lately I have found the hose collapsed on it self, just did when starting up the motor. This is at a considerably lower elevation than I usually operate it at, 0-1,000 feet VS 6,000-12,000 feet.

    So I went to the auto parts store and got new line, stiffer emissions rated PCV hose and put it on. What I am wondering is some vacuum normal on the line exiting the crankcase and if not, what is up with that?

    A-S/C
     
    #1 Aspen_S/C, Nov 29, 2014
    Last edited: Nov 30, 2014
  2. Super Werty

    Super Werty Active Member

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    sounds like you just bought some cheap line the first time.
     
  3. Aspen_S/C

    Aspen_S/C Member

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    The hose is a given, it is the direction of pressure I am wondering about.
     
  4. Torspd

    Torspd Moderator
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    The engine pulls near 24 in/Hg of vacuum. So yes, that is normal. A weak hose, or non braided hose, will collapse. I had that happen on one of my earlier sets of hoses, as well.
     
  5. Aspen_S/C

    Aspen_S/C Member

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    Thanks! As long as some vacuum is normal, all good.
     

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