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  1. #1
    Veteran Member Four Rings
    Join Date
    Jun 15 2011
    AZ Member #
    76931
    My Garage
    08 A4 Q Stock, '58 Porsche 356A, '73 BMW 2002
    Location
    Exiled.......

    Vag Com Cable--just got it. Have what appears to be a bad PCV--how to look for that ?

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    Just got a VG cable.......and I think I have a bad PCV--dealer replaced it on warranty about 5-8K ago, but I have some symptoms of a failing one--I even got a lean code (cant remember what it was) that I cleared.
    Question--what kind of log info would I look for to help in the diagnosis of this?
    I may just take it to the dealer and have them look into it---if its a bad PCV, I assume they would be on the hook for replacement.

  2. #2
    Veteran Member Four Rings ABanT's Avatar
    Join Date
    Aug 07 2007
    AZ Member #
    20148
    My Garage
    B7 ABT Avant
    Location
    Toronto

    Try taking the engine oil cap off with the engine running. If you have a hard time getting it off then it could be your pcv.

  3. #3
    Veteran Member Four Rings kurupt_hawaiian's Avatar
    Join Date
    Oct 13 2007
    AZ Member #
    21771
    My Garage
    2017 Toyota Tacoma TRD Off-road
    Location
    Waianae, Originally Molokai

    Easiest way to check if yours is bad is to remove this:

    Click this bar to view the full image.

    http://i366.photobucket.com/albums/o...9-16085412.jpg

    Once that is removed, try blowing into the flexible pipe. You should not be able to blow through this. If you can, you have to make a choice of three options.

    1. Replace with OEM part # 06F129101P for roughly $75, risking the same thing happening again in the future.
    2. Cheap and easy "PCV Fix" of which I will discuss the downside.
    3. Look at your catch can options.

    The PCV Fix

    The PCV Fix is a quick, easy, cheaper way of fixing your broken PCV. Sounds great, right? Nope. This should only be temporary. Reason being, it is sealing the issues caused by a broken PCV, but also allowing everything that should be filtered out back into the engine to turn into sludge. Sure, use this as a cheap fix while you save for a catch can, but don't keep it forever.

    The Catch Can

    Catch cans consist of metal construction that won't break with age. They catch harmful moisture and groooooss oil deposits instead of returning it into the engine to be burnt into carbon deposits. It also seals any places left for our precious boost to escape.

    There are two main types of Catch Cans. The closed-system, and the vent-to-air system. Both have their benefits, but only one is street legal.

    Vent-to-air systems do just that. Vent all the nasties straight into the air. Mostly used in racing applications. It is bad for the environment, and can really make a mess. This is probably the best system for your car, but not really the one you should go with.

    The closed-system instead of letting all the grossness out, uses a series of screens/baffles/filters to force oil and moisture to the bottom of the catch can where you can empty it out into a cleaner/safer depository. This is the most likely system for our cars.

    There are many, many options for a catch can setup for our cars. You can even do custom setups from many ebay type options. There are also many full kits comprised of everything you need, which are the options I will lay out before you, in no specific order.

    BSH is probably one of the more widely known companies for catch cans for our system. They have products ranging from just a block off plate that you can use with any catch can system, to stage 2 and even a racing staged version. Stage 2 is the most viable solution at this point.

    Sorry, stole this from another thread...
    2018 Audi A6 Mythos Black
    (SOLD) 2007 Audi A4 Quartz Gray 2.0T 6MT
    Follow me on Instagram- @Kurupt_Hawaiian

    -Elias

  4. #4
    Veteran Member Four Rings
    Join Date
    Jun 15 2011
    AZ Member #
    76931
    My Garage
    08 A4 Q Stock, '58 Porsche 356A, '73 BMW 2002
    Location
    Exiled.......

    Thanks. I am probably going to take to dealer because I think they will cover the PCV since it was installed by them less than a year ago.
    If its not that I will replace the PCV myself.
    Huge fan of Hawaii....been there about 8 times, most places....save for the friendly isle.
    I'd like to see the Pali there....supposedly the biggest in the world, bigger than Kauai even!

  5. #5
    Veteran Member Four Rings kurupt_hawaiian's Avatar
    Join Date
    Oct 13 2007
    AZ Member #
    21771
    My Garage
    2017 Toyota Tacoma TRD Off-road
    Location
    Waianae, Originally Molokai

    Yup, cliffs there has 5,000 ft drops straight down into the ocean.

    If they don't replace it for you, it's a really simple swap for the PCV. 4 screws. I changed mines twice already.
    2018 Audi A6 Mythos Black
    (SOLD) 2007 Audi A4 Quartz Gray 2.0T 6MT
    Follow me on Instagram- @Kurupt_Hawaiian

    -Elias

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