S2000 Under The Hood S2000 Technical and Mechanical discussions.

Engine knocking at idle only when warm

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Old 03-01-2012, 08:14 PM
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Yea I thought it was bearings so I went and tore the bottom end apart just to find out in the end it still knocks
Old 03-01-2012, 10:18 PM
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Maybe it's just regular 'Honda noise'? I've been told Honda's are nosier than other cars.. I have no local s2k's to compare this to but does anyone else have a say on this? Are Honda engines in fact noisier than say a Nissan engine of comparable size?
Old 03-02-2012, 07:43 PM
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I have no idea guess I shall pull the whole motor apart and see what is causing it.
Old 03-02-2012, 09:17 PM
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It looks like your car is leaking oil from the vtec solenoid, it also looks like your valve cover has been replaced with an aftermarket one. It sounds like a spun rod bearing. 99% your car was run low of oil. why is the top of the valve cover covered in oil, did you damage the tube seals?
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Old 03-02-2012, 11:15 PM
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No I spilled oil when I filled it back up from doing the bearings 15 miles ago
Old 03-04-2012, 11:40 PM
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check your crank dampener. If those start falling apart, or are not tight enough you get this noise.
Old 03-05-2012, 05:26 PM
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Will do tomorrow
Old 03-05-2012, 07:16 PM
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any updates?
Old 03-05-2012, 07:53 PM
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wow all i know is something is seriously wrong here and i wouldn't drive it.. I've owned two ap1's and never heard this knock in my life . something is definitely up .
Old 03-05-2012, 08:48 PM
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Well i know they are not supposed to sound like that im not dumb. Its not my daily so i dont care, and if it did blow it would give me a reason to build it.But as the way it looks right now i will have to pull the entire motor apart to find out what it is and i just dont feel like doing that right now.


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