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hey guys i am in the process of buy a r33 gtst and i noticed that it had a plasticy tappy sound just above idle. Above like 2000 rmp its fine and at idle its fine its just in a short area of the rev range. I spoke to the car yards mechanic and he recond that the was another 3 r33's with the same noise. Its hard to discribe the sound as its not one i have heard before. The mechanic reckoned it was a common noise but havent seemed to find a cure for it as yet last thing they where trying was swaping crank angle sensors for some reason god knows how a crank angle sensor would course a plastic tappy sound unless it was hitting the sensor wheel which would stuff it any thoughts anyone. Dosent sound nasty its just there

cheers scottie

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I know the sound, I've heard it on a couple r33's that Ive checked out for my mate. It sounds like its coming from the timing belt cover. Either the cover itself or something inside it. Both cars drove perfectly fine but it does put you off buying the car. Sort of sounds like an expensive noise to fix.

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