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Ticking sound

This is a discussion on Ticking sound within the General Help forums, part of the LSx Technical Help Section category; I was putting my car away this afternoon and I heard a ticking sound when it idles. it's easier to ...

  1. #1
    Rice Hungry GottaHaveLS1's Avatar
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    Ticking sound

    I was putting my car away this afternoon and I heard a ticking sound when it idles. it's easier to hear if you're right next to the car but not so much when ur in front with the hood open. You can hear it pretty good if you get down and look under the car where the headers collect. It starts up about ten seconds after the car starts. what could cause this? could it develop into anything serious?

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    LS1 or bust b.lee's Avatar
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    check the oil level would be my first thing.

    maybe it could be the infamous piston slap?
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    Simpsons Did it!! 98formy's Avatar
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    Exhaust leak or bad rocker arm in my case

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    Member 89LX's Avatar
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    Back plug wire or header leak?
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    To me an exhaust leak is more of a tapping sound - ticking sounds electrical. Loose plug/wire/something arcing on the header....

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    Senior Member SeVeReDiStOrTiOn's Avatar
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    How long after the headers install did it start ticking?

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    Rice Hungry GottaHaveLS1's Avatar
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    Quote Originally Posted by SeVeReDiStOrTiOn View Post
    How long after the headers install did it start ticking?
    I just noted it yesterday and the tuner noticed it as well. I had it tuned about 2 weeks after the install and I started noticing it yesterday.

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    Veteran 0rion's Avatar
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    my first thought would be an exhaust leak from the way you describe it. An exhaust leak will sometimes make a ticking sound that sounds like someone pecking on metal with a screwdriver or something like that. If it's less noticeable with the hood up but more pronounced from under the car I would look at the exhaust first. What kind of exhaust clamps did you use and are the headers slip fit or flanged?

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    Rice Hungry GottaHaveLS1's Avatar
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    Quote Originally Posted by 0rion View Post
    my first thought would be an exhaust leak from the way you describe it. An exhaust leak will sometimes make a ticking sound that sounds like someone pecking on metal with a screwdriver or something like that. If it's less noticeable with the hood up but more pronounced from under the car I would look at the exhaust first. What kind of exhaust clamps did you use and are the headers slip fit or flanged?
    They're pacesetters... so they're slip fit. I used 3 in band clamps on the two collectors and where the y pipe connects.

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    watch that piston slap if its right upon start up.

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    Senior Member 02ultraZ's Avatar
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    Ticking from engine can't find cause.


    In post #11 there is an audio and a video file of the piston slap in this thread, check it out and see if that's the noise you are hearing. My car does it really bad...

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    Senior Member 02ultraZ's Avatar
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    http://http://ls1tech.com/forums/sho...highlight=crap

    There is a thread that is on ls1tech. Not sure if that is the same noise or not, i can't listen at the moment, i'm at work and don't have any speakers. They state in this thread that it's the lifters...

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    Rice Hungry GottaHaveLS1's Avatar
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    what's piston slap and how bad is it?

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