tapping sound

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Northstar Engines and System Technical Discussion Discussion, tapping sound in Cadillac Engine Discussion; My 2003 deville makes a tapping noise is there anything to b done and should I worry. And yes I ...
  1. #1
    kcgemini is offline Cadillac Owners Member
    Join Date
    Sep 2012

    tapping sound

    My 2003 deville makes a tapping noise is there anything to b done and should I worry. And yes I have done a oil change

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  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS - 67,500 miles, 2014 Explorer XLT FWD
    Join Date
    Feb 2006
    MD Eastern Shore, Kent Island

    Re: tapping sound

    Very difficult to diagnose a "tapping noise" with no additional info. Are you able to post a video with sound ??? There are so many possibilities for "taps" or "knocks" in an engine that it takes sound, speed, location, and experience to even begin, and each component makes a different noise under normal or failing conditions.

    Any clue as to where, what frequency (engine speed or half engine speed), under what conditions the noise occurs ? Did you remove the engine (beauty) cover and snoop for location while the engine is idling ?

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