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Engine noises, possible timing chain issue

Old Jul 1, 2019 | 12:27 PM
  #1  
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Default Engine noises, possible timing chain issue

Hi guys,

LR3 is making two sounds:

1.) a rhythmic sound, loudest from the passenger wheel wheel, that sounds like a timing chain issue. It doesn’t seem to be a major issue, but it’s noticeable, like when idling in park or in drive thrus. I don’t know much about this issue, seems like the tensioner will sometimes need replaced–is this correct? If so, is this a DIY task for those that are handy?

2.) when idling in drive or reverse, I get a noise that sounds like a few raindrops here and there. It doesn’t sound like a tick or rod knock to me, more like something loose, but I can’t find anything. Curious what it could be, possible transmission issue?

Thanks, all.
 
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Old Jul 1, 2019 | 06:27 PM
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1 - could easily be an exhaust leak.

The exhaust manifold bolts are known to come loose and cause an exhaust leak. Indeed noticeable in a drive-thru. I was able to access the back ones on both sides pretty easily and tighten them up. Sound gone.

2 - need more info, where does the sound seem to come from? It could be anything from a loose heat shield to a driveshaft u-joint.
 
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Old Jul 10, 2019 | 05:11 PM
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Originally Posted by DakotaTravler
1 - could easily be an exhaust leak.

The exhaust manifold bolts are known to come loose and cause an exhaust leak. Indeed noticeable in a drive-thru. I was able to access the back ones on both sides pretty easily and tighten them up. Sound gone.

2 - need more info, where does the sound seem to come from? It could be anything from a loose heat shield to a driveshaft u-joint.
Thanks, Dakota. I tightened some bolts after reading your reply but no luck yet, will take a closer look at it.

For second issue, it’s really hard to tell but the sound seems to be coming from below vehicle or lower engine and on both sides.
 
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