S2000 Under The Hood S2000 Technical and Mechanical discussions.

strange tick/flutter

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Old 01-23-2012, 02:27 PM
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Default strange tick/flutter

Does anybody else experience a noise that sounds like a faint ticking more so from the passenger side that seems to amplify off from barriers. Its worst when the car is cold and almost gone for me when the car warms up. Seems to be worst around 2k rpms.... Sounds like it could be injectors maybe with the hood closed the sound gets directed to the passenger side. Anybody else hear this... Ive seen some threads but no real answer. Also just did a VA and when using a mechanics stethoscope i cant find any abnormal sounds but ive only done this when the car has warmed up
Old 01-23-2012, 02:57 PM
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Ive noticed this too. I can have the hood open and the motor is almost silent, nothing out of the ordinary. Driving next to walls or buildings I can hear a light tick. I haven't been able to figure out what it is.
Old 01-23-2012, 03:00 PM
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Possible exhaust leak. These engines can be a little noisy. When was the last time you adjusted your valves?
Old 01-23-2012, 03:09 PM
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Originally Posted by Nutterbutter
Ive noticed this too. I can have the hood open and the motor is almost silent, nothing out of the ordinary. Driving next to walls or buildings I can hear a light tick. I haven't been able to figure out what it is.

Yep thats pretty much what its like. the noise goes away after like 4k loudest from 2 to 3 k
Old 01-23-2012, 03:10 PM
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Originally Posted by s2klariat
Possible exhaust leak. These engines can be a little noisy. When was the last time you adjusted your valves?

like 2 weeks ago lol. Ive double checked it twice aswell to make sure and the stethoscope sounds normal across the valve cover
Old 01-23-2012, 03:24 PM
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You might try replacing your exhaust gaskets. A leaking gasket can most definitely make a noise like you're describing. With the exhaust running under the passenger side of the car it would make sense that it would be more pronounced on that side as well.
Old 01-23-2012, 03:45 PM
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You can use a stethoscope to poke around for the noise, just be careful of moving components. If a stethoscope isn't available, you can use a long-ish screwdriver, and put the handle against your ear. Touch the tip to metal and you'll be able to "hear" the noise. Valvetrain or exhaust leak is my guess.
Old 01-23-2012, 06:30 PM
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I dont think its an exhaust leak. Ive poked around agai with a stethoscope and still no clue. ill get a video up tomorow if i can of how it sounds from passenger side.
Old 01-24-2012, 08:38 AM
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i made a quick video as i pulled into the garage the car is warmed up so the noise isnt as noticeable. You guys here anything out of the ordinary? What are possible thinks that would get quieter as the car warmed up??

http://www.youtube.com/watch?v=OZ4qI...ature=youtu.be
Old 01-24-2012, 10:33 AM
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ive narrowed down that the flutter is only there from aprroximately 1800rpms to 2500rpms... very oddd


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