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engine tapping comes and goes

 
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Old 19 Feb 2017, 12:59 am
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Join Date: Sep 2016
Location: FRUITA, CO
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Default engine tapping comes and goes

Read many posts re engine noise, tapping etc but nothing about the tapping noise that comes and goes. Seems not to do it on first cold starts. its an 06 turbo with only 64K miles. regular oil changes at the Chrysler dealer every 3000 to 3500 miles. Mostly short town drives 15 miles each way every other day. I do take it out on the Interstate about once a month and run it pretty good to clean it out. Thinking its a lifter but would it not tap consistently?
Could the dealer listen to it with one of those audio tools and make a diagnosis?
Last oil change I had them add a quality lifter/tappet cleaner to top off the oil change but still taps off and on. Suggestions as to what I can do or suggest to the dealer? A screwdriver is high tech for me so unfortunately I have to take it to a shop. Bummer.
Can't remember the name of the additive but it is from Germany.
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Old 19 Feb 2017, 01:52 am
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Join Date: Aug 2014
Location: Thousand Oaks, CA
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Default Re: engine tapping comes and goes

I am suggesting that you check to see if the noise is coming from the radiator fan when it does make the noise. I had the constant knocking noise coming from one of my radiator fans after it warms up. After I replaced the radiator fan the noise went away.
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