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Is there something wrong with this 3.6L engine? https://photos.app.goo.gl/ZyHXUx4e39j8FTB39

  • Yes

    Votes: 1 33.3%
  • No

    Votes: 1 33.3%
  • Maybe

    Votes: 1 33.3%
  • Run away and take cover!

    Votes: 0 0.0%

  • Total voters
    3
1 - 7 of 7 Posts

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2007 CTS 3.6L Performance / Appearance 18" rims
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50 Posts
Discussion Starter #1
Hi there,
I'm in the market for a 2nd Gen CTS 3.6L.
Came across this 2011 CTS Coupe which looked in mint condition, but when i heard the engine it didn't sound "right" to me. It has 120K kilometers on the engine (75K Miles).


Does this sound normal to you or do you hear a potential problem?

Thanks!
 

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Registered
2009 CTS4 Premium & 2012 SRX4 Luxury
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640 Posts
Which noise doesn't sound right to you? The ticking sounds like normal high-pressure DI fuel injection to me. There's also a bit of a background hum/growl that could be a bearing going bad? Alternator, power steering pump, water pump...
 

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Registered
'14 CTS-V LongRoof; '16 ATS-V Sedan,' 04 Trailblazer 4x4; '10 CTS LongRoof gone but never forgotten
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14,823 Posts
Direct Injection noise. Was the fan whirring in the background. Sure was dirty - how are the air and cabin filters? That can tell you about the maintenance/care given.
 

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Go ahead, blame me. Everybody does 🙄
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9,184 Posts
+ on the "DI tic". Completely normal.
If you picked up on something else, please specify.
 

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Registered
2007 CTS 3.6L Performance / Appearance 18" rims
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50 Posts
Discussion Starter #5
Which noise doesn't sound right to you? The ticking sounds like normal high-pressure DI fuel injection to me. There's also a bit of a background hum/growl that could be a bearing going bad? Alternator, power steering pump, water pump...
Which noise doesn't sound right to you? The ticking sounds like normal high-pressure DI fuel injection to me. There's also a bit of a background hum/growl that could be a bearing going bad? Alternator, power steering pump, water pump...
Hi guys,
True my own CTS has a ticking sound that's similar, so I'm ok with that if it's DI injector spund. I was more concerned about the "tinny" or "pingy" sound it was making, that my CTS doesn't sound like (nor a 2012 I checked out a few days ago).


I'll have to more accurately describes the sound that irked me, or maybe I will share some other clips for comparison.

Stay tuned
Thank you!
 

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Registered
2009 CTS4 Premium & 2012 SRX4 Luxury
Joined
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640 Posts
Listened to it again, sounds like a loose heat shield.
 

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Registered
2011 CTS performance mdl 3.6L FE5
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196 Posts
When you moved to the back passenger side of the engine I heard a tick that I have never heard on mine. It sounded like a snapping sound almost like a spark plug wire arching to ground. I doubt it's an electrical arch but definitely not something I have heard before.
 
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