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Thread: Engine blow by

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  1. #1
    Join Date
    Jan 2008
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    Engine blow by

    How much is acceptable ? Lol

    My stock ly6 has always blown a lil steam out the breather
    I have -8 lines from each cover running into the catch can

    Anyways all of a sudden now it steams alot more now and at a roll wot run
    It will splatter oil from the can all over under the hood.


    I will do a compression test tomorrow but really don't think anything is wrong there the truck runs like it always has

    What ya think ? Engine is 5 years old now lol

  2. #2
    Join Date
    Nov 2007
    Location
    Pittsburgh, PA
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    mine never puffed until I lifted a head, catch can only has ever had condensation in it

    Quote Originally Posted by CHEVROLADE View Post
    How much is acceptable ? Lol

    My stock ly6 has always blown a lil steam out the breather
    I have -8 lines from each cover running into the catch can

    Anyways all of a sudden now it steams alot more now and at a roll wot run
    It will splatter oil from the can all over under the hood.


    I will do a compression test tomorrow but really don't think anything is wrong there the truck runs like it always has

    What ya think ? Engine is 5 years old now lol
    2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
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    2010 Silverado crewcab Z71 - 5.3litre w/ procharger
    2000 Wrangler - 5.3litre with some stance
    2014 Xsport- 3.5 Eco boost
    412 Motorsports

    it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference

  3. #3
    Join Date
    Jan 2008
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    Damm yea maybe I just need to tear her open and inspect
    I only run the arp bolts ,no studs.
    My Catch can catches pure oil

  4. #4
    Join Date
    Sep 2008
    Location
    Arizona/Utah
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    Quote Originally Posted by CHEVROLADE View Post
    Damm yea maybe I just need to tear her open and inspect
    I only run the arp bolts ,no studs.
    My Catch can catches pure oil
    Has it overheated at all? Otherwise I am with quik on the lifted head.
    ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06

    waiting to go in... 3.90s, 214/220cam

  5. #5
    Join Date
    Jan 2008
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    It has when it blew a heater hose off but was shut down immediately fixed the hose and back as good as she was.

  6. #6
    Join Date
    Jan 2008
    Posts
    1,550
    I'm with George, mine has only ever had condensation in it. What gaskets and bolts/studs do you have

    04 RCSB 5.3, Homemade 80mm FM, TU1, TH400

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