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Valve Knocking!? (HELP!)

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Old Jan 27, 2008 | 09:52 AM
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Default Valve Knocking!? (HELP!)

26k....there sounds to be what I think is some valve knocking. I use top grade Exxon gas, so it's not my gas, i'm pretty lost as to what this could be. Insight is greatly appreciated here guy...
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Old Jan 27, 2008 | 09:57 AM
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Old Jan 27, 2008 | 10:16 AM
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If the noise is coming from the top end, I would guess you have a bent push rod or a collapsed lifter. Does the noise go away after the engine warms up? Sounds like you are still under warranty, I would take it to your dealership.
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Old Jan 27, 2008 | 10:36 AM
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I'm not under warranty . I think it goes away after it warms up, i'll check into it. Collapsed lifter or push rod? I may have to pay for this myself...
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Old Jan 27, 2008 | 11:02 AM
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What year is the car? Are you stating it "knocks" under acceleration like the fuel is bad or are you stating there is a discernable "tick"? Have you over revved the motor recently or before this noise came about? Did it come about suddenly? Is it there at idle?
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Old Jan 27, 2008 | 11:59 AM
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I just basically noticed it right now, it's a discernable "tick" that someone said was a "valve knock". I use Exxon 93 at an actual Exxon gas station...happens at idle and at rev, I only revved it up to 1500RPM and it was there...
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Old Jan 27, 2008 | 01:08 PM
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If its doing it at idle, then is not the fuel. First thing I would try is a carbon cleaning treatment like Seafoam to see if that gets rid of it.
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