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  1. #1
    Active Member One Ring chargin's Avatar
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    Jul 23 2013
    AZ Member #
    119468
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    South Pasadena

    Oil leaks 109K+ miles, Oil filter housing?

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    So I'm tracking a oil leak backwards and it looks to be coming from my Oil Filter housing, has anyone else seen this?

    The oil is running down the front of the motor from the top of the motor below the heads, not the valve covers.


  2. #2
    Veteran Member Four Rings JimmyBones's Avatar
    Join Date
    Apr 03 2010
    AZ Member #
    57098
    Location
    Northern Virginia
    Items for Sale

    There is a valve unit under the intake manifold that could be leaking.

  3. #3
    Active Member One Ring chargin's Avatar
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    Jul 23 2013
    AZ Member #
    119468
    Location
    South Pasadena

    Valve Unit?
    I'm looking at this photo and wondering what valve would leak?

    photo link:

    http://www.wolfautoparts.com/0791331...old-27492.html

  4. #4
    Veteran Member Four Rings TarlCabot's Avatar
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    Feb 18 2013
    AZ Member #
    109786
    My Garage
    Can of Whoop @ss!!!
    Location
    Upstate, SC
    Items for Sale

    I think he means under the IM, not the IM itself... here mine off the B6



    clearly there was a small leak, but never noticeable drip or loss of oil...
    2006 Audi (B7) S4 4.2L 25th Anniversary Special Edition #167, SRP Racing Pedals, 245/35 ZR 19x9.5" ET 25 MRR Catalina's with 5mm Spacers on rear, (B5) Front Spring Perches, RS4 H-Sport (Hotchkis) Rear Sway, Apikol Snub Mount, 034 Motor/Trans mounts, ECS Performance Rear Differential Mount and 034 Rear Carrier Mount Upgrade, South Bend Feramic/Kevlar Stage 2 Clutch Disk, JHM 93 octane Tune, Ported IM & Elbo, 034 MAF hose, XS 2.5" 200 cell HFC D/P's. Custom 2.5" true dual Magnaflow Race C/B

  5. #5
    Active Member One Ring chargin's Avatar
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    Jul 23 2013
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    119468
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    South Pasadena

    Yes TarlCabot this exactly what I'm talking about. I'm losing about 4 tablespoons per day onto my drip tray under the car

  6. #6
    Active Member One Ring chargin's Avatar
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    Jul 23 2013
    AZ Member #
    119468
    Location
    South Pasadena

    TarlCabot - yours could just be residue from filter change

  7. #7
    Veteran Member Three Rings
    Join Date
    Sep 09 2011
    AZ Member #
    81025
    My Garage
    2011 Chevy Duramax, 1999 Mazda Miata
    Location
    Chardon, OH
    Items for Sale

    I had the same issue on my car. I just found it during my build. I bought new o-rings for Audi. There is an o-ring on the back of the block and then a funny looking double o-ring that connects the filter housing to the valley pan. That is where mine was leaking from.

    RIP 2004 S4 built by Gellner Engineering Racing Engines

  8. #8
    Stage 3 Forum Advertiser Four Rings Jake@JHM's Avatar
    Join Date
    Aug 31 2011
    AZ Member #
    80618
    My Garage
    MK7-GTI-APR-STG2-Grand-Cherokee-R6-Raven-IRON-1250
    Location
    Lathrop

    OP,

    We have seen the Oil Pressure Sensors fail on these cars causing a leak behind the Oil Filter Housing.

    We have them on our website if it turns out to be your issue!

    http://jhmotorsports.com/shop/catalo...-a6-p-345.html

    Jake

  9. #9
    Active Member One Ring chargin's Avatar
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    Jul 23 2013
    AZ Member #
    119468
    Location
    South Pasadena

    Thank you all very much for the insight
    aroderick 56 - I was thinking I had the same issue, I've ordered the gaskets you mentioned as well as the Intake set needed to get down to the valley.

    Jake@JHM - thanks for your input also, the switch was the easiest to replace so I started looking for my leak there

  10. #10
    Active Member One Ring chargin's Avatar
    Join Date
    Jul 23 2013
    AZ Member #
    119468
    Location
    South Pasadena

    OP,

    We have seen the Oil Pressure Sensors fail on these cars causing a leak behind the Oil Filter Housing.

    We have them on our website if it turns out to be your issue! - For $8.50 I did this as well

  11. #11
    Veteran Member Three Rings
    Join Date
    Sep 09 2011
    AZ Member #
    81025
    My Garage
    2011 Chevy Duramax, 1999 Mazda Miata
    Location
    Chardon, OH
    Items for Sale

    For the price of new gaskets, once you got it pulled off. Might as well replace it. I had so much oil over mine was too difficult to determine EXACTLY where the oil was coming from. So I cleaned it all and put on new gaskets everywhere except heads. Hopefully thats not where it was actually leaking...
    RIP 2004 S4 built by Gellner Engineering Racing Engines

  12. #12
    Registered Member One Ring
    Join Date
    Nov 21 2014
    AZ Member #
    296767
    Location
    Florida

    Half way through the same process. Sad these all fail the same way. Mine turned 112K and same thing 2-3 teaspoons of oil every day. Pressure sensor failed (and gave me a heart attack) about 6 months ago. A/C sensor destructively failed 12 months ago. 18 months ago crank angle sensor went out. It's Audi retirement plan. The plan on something failing about every 6 months. Before that all top radiator hoses. Ugh.

    I snapped 3 of the 1/8" plastic vacuum lines just by touching them. The housing gasket was flush to the block and so hardened I could barely get a pick under it.

    This is much more work than I planned on but now I'm knee deep in it. Pictures to follow



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