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Discussion Starter · #1 ·
I believe the specific engine code is B6304T4. Regardless, upon start-up and cool down a strange snapping sound is coming from the area around cylinder 1 (the cylinder furthest from the transmission). It has no rhythms related to the RPM, meaning it's not a sound of a cam lobe or something directly related to the rotation of internal parts, also this sound will occur when the car is off and cooling down. I should mention that when my finger is on the cylinder head, I can feel the vibration of the snap through the head. (which really worries me)

here is a clip of the sound when it started a while ago, BEST heard at 26 seconds!

I want to say it is something like an expanding fastener on the exhaust side, but I cannot confirm. has Anyone else had this sound?
 
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