Does my engine sound okay?
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Thread: Does my engine sound okay?

  1. #1
    drgubi is online now [OP]
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    Does my engine sound okay?

    Hey everyone,

    I've gathered the 1.4L ecotec has noisy fuel injectors resulting in an audible clicking sound at idle that is completely normal based on what I've read in other threads. Idk if I'm just being paranoid, but I feel like after I just changed my spark plugs the clicking noise is more audible and I'm noticing a little more vibration coming from the vehicle (again I MAY just be paranoid, I'm new to this whole DIY thing).

    Would someone kindly take a look at the attached videos and tell me if the sound is normal and if the mild vibration (seen better in video 2) is normal?

    Info on my cruze:

    2012 LT
    81K miles
    ACDelco iridium sparkplugs gapped to 0.028 recently installed with use of anti-seizure grease around the threading and dielectric grease around the electrode
    Everything is firmly screwed down and not loose
    No CEL
    Oil levels are excellent, still not due for a change for about 2K more miles

    Video 1: https://youtu.be/3sGpO3vYakM

    Video 2:https://youtu.be/Gs66Lx09UiI

    Thank you for helping me!

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    The videos say they're unavailable for me (maybe list it as unlisted rather than private).

    The EVAP purge valve on these cars - round canister on top of the intake manifold - has been known to make loud clacking noise and usually only has a lifespan of 3-5 years. You can try unplugging that, and if it gets much quieter, go ahead and replace it - they're about $25.
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    drgubi is online now [OP]
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    Quote Originally Posted by jblackburn View Post
    The videos say they're unavailable for me (maybe list it as unlisted rather than private).

    The EVAP purge valve on these cars - round canister on top of the intake manifold - has been known to make loud clacking noise and usually only has a lifespan of 3-5 years. You can try unplugging that, and if it gets much quieter, go ahead and replace it - they're about $25.

    I just set the videos to public! They should be viewable now. I'll look into the EVAP purge valve in the mean time.

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    Actually, I hear what sounds to be a vacuum leak.

    Pop off the spark plug cover and check the disc at the top right for hissing. If it hisses if you put your thumb over it, head here:

    https://www.cruzetalk.com/forum/34-g...explained.html
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    drgubi is online now [OP]
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    This is the disc you’re referring to right? It feels solid, no audible hissing even with pressure.
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    With the engine running there is an audible hissing sound coming from the region of the intercooler hose. No idea if that’s significant or not 😕

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    Quote Originally Posted by drgubi View Post
    This is the disc you’re referring to right? It feels solid, no audible hissing even with pressure.
    Maybe the oil cap? I think I hear something hissing...a vacuum/air leak can cause it to idle a bit weird.

    Idle sounds weird from my end, but it COULD be just the spark plug cover rattling.

    A little bit of vibration from it at idle is normal, though.
    Last edited by jblackburn; 04-14-2019 at 05:04 PM.
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    drgubi is online now [OP]
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    Quote Originally Posted by jblackburn View Post
    Maybe the oil cap? I think I hear something hissing...a vacuum/air leak can cause it to idle a bit weird.

    Idle sounds weird from my end, but it COULD be just the spark plug cover rattling.

    A little bit of vibration from it at idle is normal, though.
    This is a video with the spark plug cover removed and zoning in on the hissing noise coming from the intercooler hose while idling https://youtu.be/BX9ASFtcw7I

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