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Motor noise... (video/sound clip)

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Old 02-18-2009, 09:49 PM
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Default Motor noise... (video/sound clip)

okay, i have notice this sound thats coming from the motor for some time now but never made a big deal out of it...


http://www.youtube.com/watch?v=LTdgbp9dxSk

Second vid: you can hear it more clear on this one.
http://www.youtube.com/watch?v=GlrpfVOP0vo


you can hear it around :43sec, i was wondering if yall know what it might be, thanks.

EDIT:Okay guys, today i just noticed it a bit more... i changed the oil putting 5w-30 castrol high mileage... i was looking for the GC and had no luck but i just figured i'd put it on my next oil change but anyways today it sounded a bit louder, i dk why if the car is suppose to take 5-30. what do yall think? piston slap? lifter? oh and i think its coming from the left side if im not mistaking
http://http://www.youtube.com/watch?v=H-HqZuqNodw

Last edited by Dood001; 05-02-2010 at 08:05 PM.
Old 02-18-2009, 10:09 PM
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You talking abotu those two sounds? Sounded like a monster growling twice. Maybe a vaccum leak can cause that.

Am I right about what I'm hearing?
Old 02-18-2009, 10:23 PM
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lol no it sounds like a NACK sound. the two "moster growls" were me reving it to see if intensified the sound of the "NACKING"

ill be back in a bit with a second vid, im going somwhere real quick and see if i can catch a better vid/sound clip of it.
Old 02-19-2009, 01:41 AM
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Hmmm. Is it the constant clack, clack, clack, clack sound?

Does it get faster and faster as you rev it? Is it going along with whatever rpm its doing?

Sounds like a lifter tapping?
Old 02-19-2009, 07:37 AM
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its really hard to hear, it doesnt sound like a lifter to me, all of the bad lifters i have heard seemed to be way more high pitched, and a definite clicking noise

just from those videos i would think a bad rod bearing, but its hard to hear

could be piston slap, which is what i would say it was.
Old 05-02-2010, 08:15 PM
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I had asked at some local guy that works specially on LS1 motor and he said it normally does this at a cold start. Today after changing my oil i left my car running for a good 10 or so minutes and it kept going, so i dk. i put up a new vid for you guys to see whats up

thx
Old 05-25-2010, 05:46 PM
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mines making the same noise...i'm leanin towards a rocker arm issue or a lifter bein that it seems to get quiet when the motor is above about 2k. more rpms more oil pressure, less noise i think.




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