New to 2008 3.6DI Sounds, Clue me in
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2008-2013 Cadillac CTS General Discussion Discussion, New to 2008 3.6DI Sounds, Clue me in in Cadillac CTS Second Generation Forum - 2008-2013; Hey guys, I just purchased my first Cadillac. 2008 3.6DI with about 50k on it. I got a great deal ...
  1. #1
    billdethrow is offline Cadillac Owners Member
    Automobile(s): CTS 3.6DI
    Join Date
    Jan 2013
    Age
    26
    Posts
    2

    New to 2008 3.6DI Sounds, Clue me in

    Hey guys,
    I just purchased my first Cadillac. 2008 3.6DI with about 50k on it. I got a great deal and love the car. I have been reading alot about the "Loud injectors" and i understand that no biggie. I have 2 questions for the people with one of these cars

    1 - I was told it should idle "smooth as glass" This one is slightly rough. Not like a monster truck but it is felt.
    2 - There is a pinging from what seems like coming from the drivers side back of the motor/firewall area. Its not based on RPM, because it when it starts its a very fast sound, in no relationship to RPM. I seem to hear it when RPMS fall as well. Example, when i let off the gas you hear it lightly for about 3 seconds then it goes back to a normal sound. I thought it was a lifter but it volume does not change with temperature change like a lifter. Some say fuel Pump or lift pump? Again i no nothing (yet) about this motor. Educate me???

    Thanks!

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  3. #2
    SLICKNICK54 is offline Cadillac Owners Member
    Automobile(s): 2008 cts 3.6
    Join Date
    Nov 2011
    Location
    Canfield, Ohio
    Age
    29
    Posts
    21

    Re: New to 2008 3.6DI Sounds, Clue me in

    For question two it is normal for a soft thicken as I was told it is the pulse dampener on the direct injection. Here is a link should help. http://www.cadillacforums.com/forums...ing-noise.html


    As far as question 1 mine is not smooth as glass but not rough also . My rims don't bounce around or anything though if that helps

    And.... CONGRATS on the car !!

  4. #3
    billdethrow is offline Cadillac Owners Member
    Automobile(s): CTS 3.6DI
    Join Date
    Jan 2013
    Age
    26
    Posts
    2

    Re: New to 2008 3.6DI Sounds, Clue me in

    Thanks Its a awesome car!

    ----------

    I hope the car lasts as long as I am hoping! Totally worth every penny so far

  5. #4
    SLICKNICK54 is offline Cadillac Owners Member
    Automobile(s): 2008 cts 3.6
    Join Date
    Nov 2011
    Location
    Canfield, Ohio
    Age
    29
    Posts
    21

    Re: New to 2008 3.6DI Sounds, Clue me in

    If you want to help make it last look into the rx catch cans, I am purchasing one tomorrow .
    You can read all about them on the forum and they seem like a must for our cars

  6. #5
    Cadillac Cust Svc's Avatar
    Cadillac Cust Svc is online now Cadillac Customer Service
    Automobile(s): All Cadillac vehicles!
    Join Date
    Mar 2010
    Location
    Michigan
    Posts
    11,158

    Re: New to 2008 3.6DI Sounds, Clue me in

    Congratulations on your CTS, billdethrow! I'm happy you're enjoying it so far, and please let me know if you ever would like me to investigate vehicle questions further for you. I'm always available to check for recalls, warranty information, or provide your build sheet, so email me at Katie_Lucille@gmexpert.com for further assistance. (Including the last eight of your VIN in your message would be helpful!)

    Best,

    Katie
    Cadillac Customer Service

  7. #6
    tinman's Avatar
    tinman is offline Cadillac Owners Connoisseur
    Automobile(s): 2010 CTS Shooting Brake W/Performance package, 3.6 DI
    Join Date
    Jul 2006
    Location
    Jacksonville, Florida
    Posts
    4,494

    Re: New to 2008 3.6DI Sounds, Clue me in

    Congrats on your new ride and welcome to the forum.

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