05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons) - Page 6
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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons) in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; The marks on the chains are strictly for setting the initial timing. On disassembly, only the gear marks should be ...
  1. #76
    ktr-sb is offline Cadillac Owners Fanatic
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    Re: 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons)

    The marks on the chains are strictly for setting the initial timing. On disassembly, only the gear marks should be used to get the gears in the right ballpark for setting the timing on the new chains.
    Bluehaze07 and Bluehaze07 like this.

  2. #77
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    Re: 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons)

    yeah....we verified with one of his caddy tech buddies. Thanks for the heads up.

  3. #78
    74chvy glasshouse is offline Cadillac Owners Fanatic
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    Re: 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons)

    i hear a rattle not really in the morning/cold start ups but if i go to the store and come out it rattles for a couple seconds when i start is there anyway to check to be sure its not something else?

  4. #79
    74chvy glasshouse is offline Cadillac Owners Fanatic
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    Re: 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons)

    is doesnt do it all the time on warm starts

  5. #80
    ktr-sb is offline Cadillac Owners Fanatic
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    Re: 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons)

    Quote Originally Posted by 74chvy glasshouse View Post
    i hear a rattle not really in the morning/cold start ups but if i go to the store and come out it rattles for a couple seconds when i start is there anyway to check to be sure its not something else?
    YES! I would strongly recommend you replace the oil filter cap. There is a check valve in there, and I strongly suspect that when it wears out, it causes the noise you are talking about. I had the same noise, even after replacing the chains. If it fixes yours, it could save you a lot of money.

    I will post pix and part numbers in a second.

  6. #81
    ktr-sb is offline Cadillac Owners Fanatic
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    Re: 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons)

    I think the noise is caused by a weak bypass valve spring. The bypass valve lives in the oil filter housing cap:



    The cap is part no. 12583470, and is about $30. Replacing it is easiest, that way you don't worry about distorting the new valve when you hammer it in. The new cap will also come with a new blue o-ring instead of the green one:







    If you want to save a few bucks, and are good with tools, the bypass valve is part no 25014612, and is about $5.00:







    You remove the bypass valve like this. Get a pair of vice grips and wiggle the retainer out - don't worry, the retainer is heavy steel:





    Then drive the old valve out with a 9mm 1/4" drive deep well socket (or something similar):



    Then gently drive the new one in with an 11 mm 1/4" drive deep well socket (be firm but don't overdo it):



    Then you carefully drive the retainer and valve back into the old cap. Make sure you clean the retainer and cap really well, and make sure the retainer is lined up perfectly, or you will end up with an aluminum splinter that will clog the check valve.

  7. #82
    ktr-sb is offline Cadillac Owners Fanatic
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    Re: 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons)

    Here is some research I did a few weeks ago:

    http://www.bobistheoilguy.com/forums...Number=2642175

  8. #83
    74chvy glasshouse is offline Cadillac Owners Fanatic
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    Re: 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons)

    so the noise will be coming from the filter cap?

  9. #84
    ktr-sb is offline Cadillac Owners Fanatic
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    Re: 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons)

    Quote Originally Posted by 74chvy glasshouse View Post
    so the noise will be coming from the filter cap?
    Not really. The timing chains and camshaft lifters require oil pressure to keep them from being noisy. I believe the valve in the cap is allowing too little pressure at startup. Assuming you have the same noise as I did, which it sounds like you do.

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    Re: 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons)

    ktr-sb

    i've reached my rate-limit for PM's per hour here a couple times today

    don't want to wait to get back in touch w/ you

    can you email me so i'll have your email address

    i can't send you the list because i don't know your email address

    my email is in my signature below all my posts

    cheers,
    chris
    Chris Heath (RippyPartsDept) is an ASE Certified GM Parts Consultant at Rippy Automotive
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  11. #86
    bobcat68 is offline Cadillac Owners Member
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    Re: 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons)

    The cylinder heads went to the shop on Thursday. I cleaned the pistons a la briggy's way. It worked great. Photos are attached. The piston were coated as bad as the heads in my previous post.

    IMG_0388.JPG

    IMG_0389.JPG

    IMG_0390.JPG

  12. #87
    74chvy glasshouse is offline Cadillac Owners Fanatic
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    Re: 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons)

    so itll sound like lifters but if it sounds from front its chains ? when it does make the rattle it goes away on its own without tapping the gas. well ill give it a shot and do it anyways its cheaper than chains

  13. #88
    74chvy glasshouse is offline Cadillac Owners Fanatic
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    Re: 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons)

    just read your post correctly ktr-sb timing chains and lifters require right pressure. Could this filter cap cause timing chain failure also

  14. #89
    74chvy glasshouse is offline Cadillac Owners Fanatic
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    Re: 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons)

    rippy can you give me a price on oil filter cap 3.6 shipped to 92234

  15. #90
    ktr-sb is offline Cadillac Owners Fanatic
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    Re: 05 CTS 3.6L Timing Chain Job, Tons-o-pics (I mean tons)

    Quote Originally Posted by bobcat68 View Post
    The cylinder heads went to the shop on Thursday. I cleaned the pistons a la briggy's way. It worked great. Photos are attached. The piston were coated as bad as the heads in my previous post.
    Nice pics. I am trying to study the oil consumption issue, and why drilling out the PCV orifice fitting might make a difference. Could I ask a huge favor? Could you take some well-lighted pics of the passenger's side block, of the drainback holes in the very rear of the block? I am trying to figure out if there is something down there that slings oil up the head. Thanks in advance.

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