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2004-2007 Cadillac CTS-V General Discussion Discussion, LS6 Oil Leak Passenger Side in Cadillac CTS-V Series Forum - 2004 - 2007; Try re-torque them at the right ft lbs just to check. That way you cant over do them if it ...
  1. #16
    odla's Avatar
    odla is offline Cadillac Owners Connoisseur
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    Re: LS6 Oil Leak Passenger Side

    Try re-torque them at the right ft lbs just to check. That way you cant over do them if it is still to spec.

  2. #17
    PISNUOFF Guest

    Re: LS6 Oil Leak Passenger Side

    My front main seal always looked like it was leaving from that spot. Maybe yours has eaten into the balancer like mine did, twice.

  3. #18
    repenttokyo is offline Cadillac Owners Connoisseur
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    Re: LS6 Oil Leak Passenger Side

    I was underneath again tonight and I took some pictures.

    Further analysis reveals that the leak might be higher than I thought. You can see both the passenger side, where it is really bad, and a little bit above the oil filer on the driver's side, in these shots.

    Any opinions or help would be appreciated!









    Attached Images

  4. #19
    PISNUOFF Guest

    Re: LS6 Oil Leak Passenger Side

    What's it look like at the top, behind the intake manifold?

  5. #20
    lollygagger8's Avatar
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    Re: LS6 Oil Leak Passenger Side

    Havent read previous posts, but it might be a motor mount that broke. The fluid looks brown when it dries

  6. #21
    repenttokyo is offline Cadillac Owners Connoisseur
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    Re: LS6 Oil Leak Passenger Side

    Quote Originally Posted by lollygagger8 View Post
    Havent read previous posts, but it might be a motor mount that broke. The fluid looks brown when it dries
    I am running 80a poly mounts from revshift.

    Quote Originally Posted by PISNUOFF View Post
    What's it look like at the top, behind the intake manifold?
    I will take another look tonight, but after the track last night it looked dry. Blocked PCV maybe? It only seems to come out when the engine is running, I've had it up on a lift and washed the underside, and half a day sitting revealed no leak. Driving the car got it going again.

  7. #22
    rand49er's Avatar
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    Re: LS6 Oil Leak Passenger Side

    I'm turned around a bit. Is that anywhere near the dipstick tube?
    '05 CTS-V, Maggie, Kooks, Hotchkis, Ground Control, Corsa, B&M, DSS/Hendrix, Full 3M Clear Bra, Autovation, V Headrests, CTS Console, STS-V 55w Fogs, Black Vette FRCs, Specter Werkes, Katech LS9 Clutch, SS Brake Lines, Heavymetals U-Turn Fuel Line Eliminator, Momo Combat Evo Shift Knob, Wldwhl Clear Sidemarkers, Linea Corse LC855 Wheels or OEM wheels w/'06-'07 Center Caps, plus a couple more. 472 RWHP/411 RWTQ (Mustang Dyno).

  8. #23
    repenttokyo is offline Cadillac Owners Connoisseur
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    Re: LS6 Oil Leak Passenger Side

    It's on the same side of the engine as the dipstick tube, but the tube itself appears to be dry at the top - last time I checked.

    It happens during normal driving, so I don't see how it could be blowing out the tube - if it was exclusively on the track, then maybe, but during normal driving?

  9. #24
    robojesus is offline Banned
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    Re: LS6 Oil Leak Passenger Side

    it could blow out of the tube if you have a clogged PCV line (ask me how i know).

    i'd also take that cover off and check for oil in the bellhousing.

  10. #25
    repenttokyo is offline Cadillac Owners Connoisseur
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    Re: LS6 Oil Leak Passenger Side

    Quote Originally Posted by robojesus View Post
    i'd also take that cover off and check for oil in the bellhousing.
    which cover specifically?

  11. #26
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    Re: LS6 Oil Leak Passenger Side

    Quote Originally Posted by repenttokyo View Post
    which cover specifically?
    There's the two little black covers that go on either side of the bell housing, at between 8-9 o'clock and 3-4 o'clock. One is the trim to keep water from getting into the bell from the starter, the other goes over the other side so they can generically use the engine-trans on other cars and easily swap starter locations. I have a feeling like you might have a little oil blowing through there, although I could definitely be wrong


  12. #27
    lollygagger8's Avatar
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    Re: LS6 Oil Leak Passenger Side

    Ok I saw the pics....sorry I didn't look before.

    When you put the oil pan back on you have to use some RTV in the corners where the timing chain covers connects to it. Either that is missing, or not enough, or it was never cleaned off when reinstalled. This is a common spot that has the potential to leak.

    The oil pan bolts do not take much TQ at all (106 INCH lbs IIRC) they could also be over or under torqued.

  13. #28
    rand49er's Avatar
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    Re: LS6 Oil Leak Passenger Side

    Your other pics were outstanding. Can you post up more now that you seem to have it pinpointed?
    '05 CTS-V, Maggie, Kooks, Hotchkis, Ground Control, Corsa, B&M, DSS/Hendrix, Full 3M Clear Bra, Autovation, V Headrests, CTS Console, STS-V 55w Fogs, Black Vette FRCs, Specter Werkes, Katech LS9 Clutch, SS Brake Lines, Heavymetals U-Turn Fuel Line Eliminator, Momo Combat Evo Shift Knob, Wldwhl Clear Sidemarkers, Linea Corse LC855 Wheels or OEM wheels w/'06-'07 Center Caps, plus a couple more. 472 RWHP/411 RWTQ (Mustang Dyno).

  14. #29
    repenttokyo is offline Cadillac Owners Connoisseur
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    Re: LS6 Oil Leak Passenger Side

    Back everyone - sorry I bought a house last week and it's been keeping me away from the car.

    I think it's the oil pan - that's what seems to make the most sense so far. After a track session this week I examined the top of the engine, but I couldn't find any oil anywhere, really, except for what looked like a bit of older staining near the front of the passenger side valve cover. I am going to try re-gasketing the oil pan and see if that helps. I have a few weeks before my next track date, so that should give me time to do it.

    I really appreciate everyone's help on tracking this down. I hope that will solve my problem.

  15. #30
    2007ThunderV's Avatar
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    I had a oil pan done on mine looked wet in the same areas

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